Add m-esr52 at 52.6.0

97 files changed, 3402 insertions, 0 deletions

diff --git a/testing/web-platform/tests/WebIDL/valid/idl/allowany.widl b/testing/web-platform/tests/WebIDL/valid/idl/allowany.widl
new file mode 100644
index 000000000..2343bb963
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/allowany.widl
@@ -0,0 +1,6 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface B {
+  void g();
+  void g(B b);
+  void g([AllowAny] DOMString s);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/array.widl b/testing/web-platform/tests/WebIDL/valid/idl/array.widl
new file mode 100644
index 000000000..22e21fb65
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/array.widl
@@ -0,0 +1,5 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+[Constructor]
+interface LotteryResults {
+  readonly attribute unsigned short[][] numbers;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/attributes.widl b/testing/web-platform/tests/WebIDL/valid/idl/attributes.widl
new file mode 100644
index 000000000..7e1d691cb
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/attributes.widl
@@ -0,0 +1,14 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+exception InvalidName {
+  DOMString reason;
+};
+
+exception NoSuchPet { };
+
+interface Person {
+
+  // A simple attribute that can be set to any value the range an unsigned
+  // short can take.
+  attribute unsigned short age;
+
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/callback.widl b/testing/web-platform/tests/WebIDL/valid/idl/callback.widl
new file mode 100644
index 000000000..d92f6a18c
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/callback.widl
@@ -0,0 +1,5 @@
+callback AsyncOperationCallback = void (DOMString status);
+
+callback interface EventHandler {
+  void eventOccurred(DOMString details);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/caller.widl b/testing/web-platform/tests/WebIDL/valid/idl/caller.widl
new file mode 100644
index 000000000..92acb1c01
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/caller.widl
@@ -0,0 +1,5 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface NumberQuadrupler {
+  // This operation simply returns four times the given number x.
+  legacycaller float compute(float x);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/constants.widl b/testing/web-platform/tests/WebIDL/valid/idl/constants.widl
new file mode 100644
index 000000000..5e28ae9c1
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/constants.widl
@@ -0,0 +1,18 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Util {
+  const boolean DEBUG = false;
+  const short negative = -1;
+  const octet LF = 10;
+  const unsigned long BIT_MASK = 0x0000fc00;
+  const float AVOGADRO = 6.022e23;
+  const unrestricted float sobig = Infinity;
+  const unrestricted double minusonedividedbyzero = -Infinity;
+  const short notanumber = NaN;
+};
+
+exception Error {
+  const short ERR_UNKNOWN = 0;
+  const short ERR_OUT_OF_MEMORY = 1;
+
+  short errorCode;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/constructor.widl b/testing/web-platform/tests/WebIDL/valid/idl/constructor.widl
new file mode 100644
index 000000000..f93ec08a6
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/constructor.widl
@@ -0,0 +1,9 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+[Constructor,
+ Constructor(float radius)]
+interface Circle {
+  attribute float r;
+  attribute float cx;
+  attribute float cy;
+  readonly attribute float circumference;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/dictionary-inherits.widl b/testing/web-platform/tests/WebIDL/valid/idl/dictionary-inherits.widl
new file mode 100644
index 000000000..48f8a0fdc
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/dictionary-inherits.widl
@@ -0,0 +1,9 @@
+dictionary PaintOptions {
+  DOMString? fillPattern = "black";
+  DOMString? strokePattern = null;
+  Point position;
+};
+
+dictionary WetPaintOptions : PaintOptions {
+  float hydrometry;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/dictionary.widl b/testing/web-platform/tests/WebIDL/valid/idl/dictionary.widl
new file mode 100644
index 000000000..f46b7ba78
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/dictionary.widl
@@ -0,0 +1,11 @@
+// Extracted from Web IDL editors draft May 31 2011
+dictionary PaintOptions {
+  DOMString? fillPattern = "black";
+  DOMString? strokePattern = null;
+  Point position;
+};
+
+partial dictionary A {
+  long h;
+  long d;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/documentation-dos.widl b/testing/web-platform/tests/WebIDL/valid/idl/documentation-dos.widl
new file mode 100644
index 000000000..fb801101f
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/documentation-dos.widl
@@ -0,0 +1,33 @@
+/**

+* \brief Testing documentation features

+*

+* This is a

+* single paragraph

+*

+* <p>This is valid.</p>

+* <p>This is <em>valid</em>.</p>

+* <p>This is <b>valid</b>.</p>

+* <p>This is <a href=''>valid</a>.</p>

+* <ul>

+* <li>This</li>

+* <li>is</li>

+* <li>valid</li>

+* </ul>

+* <dl>

+* <dt>This</dt>

+* <dd>valid</dd>

+* </dl>

+* <table>

+* <tr>

+* <td>this</td>

+* <td>is</td>

+* </tr>

+* <tr>

+* <td>valid</td>

+* </tr>

+* </table>

+* <p>This is <br> valid.</p>

+* <p>This is <br /> valid.</p>

+* <p>This is <br/> valid.</p>

+*/

+interface Documentation {};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/documentation.widl b/testing/web-platform/tests/WebIDL/valid/idl/documentation.widl
new file mode 100644
index 000000000..003e9226f
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/documentation.widl
@@ -0,0 +1,34 @@
+/**
+* \brief Testing documentation features
+*
+* This is a
+* single paragraph
+*
+* <p>This is valid.</p>
+* <p>This is <em>valid</em>.</p>
+* <p>This is <b>valid</b>.</p>
+* <p>This is <a href=''>valid</a>.</p>
+* <ul>
+* <li>This</li>
+* <li>is</li>
+* <li>valid</li>
+* </ul>
+* <dl>
+* <dt>This</dt>
+* <dd>valid</dd>
+* </dl>
+* <table>
+* <tr>
+* <td>this</td>
+* <td>is</td>
+* </tr>
+* <tr>
+* <td>valid</td>
+* </tr>
+* </table>
+* <p>This is <br> valid.</p>
+* <p>This is <br /> valid.</p>
+* <p>This is <br/> valid.</p>
+* <p><img src="foo.png" alt="Valid"/></p>
+*/
+interface Documentation {};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/enum.widl b/testing/web-platform/tests/WebIDL/valid/idl/enum.widl
new file mode 100644
index 000000000..851fca2e6
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/enum.widl
@@ -0,0 +1,8 @@
+enum MealType { "rice", "noodles", "other" };
+
+interface Meal {
+  attribute MealType type;
+  attribute float size;     // in grams
+
+  void initialize(MealType type, float size);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/equivalent-decl.widl b/testing/web-platform/tests/WebIDL/valid/idl/equivalent-decl.widl
new file mode 100644
index 000000000..6b3e0eda2
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/equivalent-decl.widl
@@ -0,0 +1,18 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  getter float getProperty(DOMString propertyName);
+  setter void setProperty(DOMString propertyName, float propertyValue);
+};
+
+
+interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  float getProperty(DOMString propertyName);
+  void setProperty(DOMString propertyName, float propertyValue);
+
+  getter float (DOMString propertyName);
+  setter void (DOMString propertyName, float propertyValue);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/exception-inheritance.widl b/testing/web-platform/tests/WebIDL/valid/idl/exception-inheritance.widl
new file mode 100644
index 000000000..258fdeba6
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/exception-inheritance.widl
@@ -0,0 +1,7 @@
+// from http://lists.w3.org/Archives/Public/public-script-coord/2010OctDec/0112.html
+  exception DOMException {
+    unsigned short code;
+  };
+
+  exception HierarchyRequestError : DOMException { };
+  exception NoModificationAllowedError : DOMException { };
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/exception.widl b/testing/web-platform/tests/WebIDL/valid/idl/exception.widl
new file mode 100644
index 000000000..f4b6ae29e
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/exception.widl
@@ -0,0 +1,8 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Dahut {
+  attribute DOMString type;
+};
+
+exception SomeException {
+};
+
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/getter-setter.widl b/testing/web-platform/tests/WebIDL/valid/idl/getter-setter.widl
new file mode 100644
index 000000000..bdf87e1c7
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/getter-setter.widl
@@ -0,0 +1,7 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  getter float (DOMString propertyName);
+  setter void (DOMString propertyName, float propertyValue);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/identifier-qualified-names.widl b/testing/web-platform/tests/WebIDL/valid/idl/identifier-qualified-names.widl
new file mode 100644
index 000000000..33893d4c6
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/identifier-qualified-names.widl
@@ -0,0 +1,44 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+  // Typedef identifier: "number"
+  // Qualified name:    "::framework::number"
+  typedef float number;
+
+  // Exception identifier: "FrameworkException"
+  // Qualified name:       "::framework::FrameworkException"
+  exception FrameworkException {
+
+    // Constant identifier: "ERR_NOT_FOUND"
+    // Qualified name:      "::framework::FrameworkException::ERR_NOT_FOUND"
+    const long ERR_NOT_FOUND = 1;
+
+    // Exception field identifier: "code"
+    long code;
+  };
+
+  // Interface identifier: "System"
+  // Qualified name:       "::framework::System"
+  interface System {
+
+    // Operation identifier:          "createObject"
+    // Operation argument identifier: "interface"
+    object createObject(DOMString _interface);
+
+    // Operation has no identifier; it declares a getter.
+    getter DOMString (DOMString keyName);
+  };
+
+    
+    // Interface identifier: "TextField"
+    // Qualified name:       "::framework::gui::TextField"
+    interface TextField {
+
+      // Attribute identifier: "const"
+      attribute boolean _const;
+
+      // Attribute identifier: "value"
+      attribute DOMString? _value;
+    };
+
+interface Foo {
+ void op(object interface);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/implements.widl b/testing/web-platform/tests/WebIDL/valid/idl/implements.widl
new file mode 100644
index 000000000..7a310926f
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/implements.widl
@@ -0,0 +1,14 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+  interface Node {
+    readonly attribute unsigned short nodeType;
+    // ...
+  };
+
+  interface EventTarget {
+    void addEventListener(DOMString type,
+                          EventListener listener,
+                          boolean useCapture);
+    // ...
+  };
+
+  Node implements EventTarget;
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/indexed-properties.widl b/testing/web-platform/tests/WebIDL/valid/idl/indexed-properties.widl
new file mode 100644
index 000000000..acf0ed3bf
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/indexed-properties.widl
@@ -0,0 +1,12 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface OrderedMap {
+  readonly attribute unsigned long size;
+
+  getter any getByIndex(unsigned long index);
+  setter void setByIndex(unsigned long index, any value);
+  deleter void removeByIndex(unsigned long index);
+
+  getter any get(DOMString name);
+  setter creator void set(DOMString name, any value);
+  deleter void remove(DOMString name);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/inherits-getter.widl b/testing/web-platform/tests/WebIDL/valid/idl/inherits-getter.widl
new file mode 100644
index 000000000..558e81164
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/inherits-getter.widl
@@ -0,0 +1,16 @@
+interface Animal {
+
+  // A simple attribute that can be set to any string value.
+  readonly attribute DOMString name;
+};
+
+interface Person : Animal {
+
+  // An attribute whose value cannot be assigned to.
+  readonly attribute unsigned short age;
+
+  // An attribute that can raise an exception if it is set to an invalid value.
+  // Its getter behavior is inherited from Animal, and need not be specified
+  // the description of Person.
+  inherit attribute DOMString name;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/interface-inherits.widl b/testing/web-platform/tests/WebIDL/valid/idl/interface-inherits.widl
new file mode 100644
index 000000000..7921def77
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/interface-inherits.widl
@@ -0,0 +1,12 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Animal {
+  attribute DOMString name;
+};
+
+interface Human : Animal {
+  attribute Dog pet;
+};
+
+interface Dog : Animal {
+  attribute Human owner;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/iterator.widl b/testing/web-platform/tests/WebIDL/valid/idl/iterator.widl
new file mode 100644
index 000000000..3bf1b36de
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/iterator.widl
@@ -0,0 +1,35 @@
+interface SessionManager {
+  Session getSessionForUser(DOMString username);
+  readonly attribute unsigned long sessionCount;
+
+  Session iterator;
+};
+
+interface Session {
+  readonly attribute DOMString username;
+  // ...
+};
+
+interface SessionManager2 {
+  Session2 getSessionForUser(DOMString username);
+  readonly attribute unsigned long sessionCount;
+
+  Session2 iterator = SessionIterator;
+};
+
+interface Session2 {
+  readonly attribute DOMString username;
+  // ...
+};
+
+interface SessionIterator {
+  readonly attribute unsigned long remainingSessions;
+};
+
+     interface NodeList {
+       Node iterator = NodeIterator;
+     };
+
+     interface NodeIterator {
+       Node iterator object;
+     };
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/namedconstructor.widl b/testing/web-platform/tests/WebIDL/valid/idl/namedconstructor.widl
new file mode 100644
index 000000000..c468b78f8
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/namedconstructor.widl
@@ -0,0 +1,6 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+[NamedConstructor=Audio,
+ NamedConstructor=Audio(DOMString src)]
+interface HTMLAudioElement : HTMLMediaElement {
+  // ...
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/nointerfaceobject.widl b/testing/web-platform/tests/WebIDL/valid/idl/nointerfaceobject.widl
new file mode 100644
index 000000000..c17d75ff8
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/nointerfaceobject.widl
@@ -0,0 +1,5 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+[NoInterfaceObject]
+interface Query {
+  any lookupEntry(unsigned long key);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/nullable.widl b/testing/web-platform/tests/WebIDL/valid/idl/nullable.widl
new file mode 100644
index 000000000..ccbf625ff
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/nullable.widl
@@ -0,0 +1,9 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface MyConstants {
+  const boolean? ARE_WE_THERE_YET = false;
+};
+
+interface Node {
+  readonly attribute DOMString? namespaceURI;
+  // ...
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/nullableobjects.widl b/testing/web-platform/tests/WebIDL/valid/idl/nullableobjects.widl
new file mode 100644
index 000000000..83d1d40b2
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/nullableobjects.widl
@@ -0,0 +1,13 @@
+// Extracted from WebIDL spec 2011-05-23
+
+interface A {
+  // ...
+};
+interface B {
+  // ...
+};
+interface C {
+  void f(A? x);
+  void f(B? x);
+
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/operation-optional-arg.widl b/testing/web-platform/tests/WebIDL/valid/idl/operation-optional-arg.widl
new file mode 100644
index 000000000..379053b45
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/operation-optional-arg.widl
@@ -0,0 +1,4 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface ColorCreator {
+  object createColor(float v1, float v2, float v3, optional float alpha = 3.5);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/overloading.widl b/testing/web-platform/tests/WebIDL/valid/idl/overloading.widl
new file mode 100644
index 000000000..ef1288a88
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/overloading.widl
@@ -0,0 +1,20 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface A {
+  // ...
+};
+
+interface B {
+  // ...
+};
+
+interface C {
+  void f(A x);
+  void f(B x);
+};
+
+interface A {
+  /* f1 */ void f(DOMString a);
+  /* f2 */ void f([AllowAny] DOMString a, DOMString b, float... c);
+  /* f3 */ void f();
+  /* f4 */ void f(long a, DOMString b, optional DOMString c, float... d);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/overridebuiltins.widl b/testing/web-platform/tests/WebIDL/valid/idl/overridebuiltins.widl
new file mode 100644
index 000000000..79211c29e
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/overridebuiltins.widl
@@ -0,0 +1,6 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+[OverrideBuiltins]
+interface StringMap2 {
+  readonly attribute unsigned long length;
+  getter DOMString lookup(DOMString key);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/partial-interface.widl b/testing/web-platform/tests/WebIDL/valid/idl/partial-interface.widl
new file mode 100644
index 000000000..90e7e0ea4
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/partial-interface.widl
@@ -0,0 +1,7 @@
+interface Foo {
+  attribute DOMString bar;
+};
+
+partial interface Foo {
+  attribute DOMString quux;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/primitives.widl b/testing/web-platform/tests/WebIDL/valid/idl/primitives.widl
new file mode 100644
index 000000000..92939601a
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/primitives.widl
@@ -0,0 +1,19 @@
+interface Primitives {
+  attribute boolean truth;
+  attribute byte character;
+  attribute octet value;
+  attribute short number;
+  attribute unsigned short positive;
+  attribute long big;
+  attribute unsigned long bigpositive;
+  attribute long long bigbig;
+  attribute  unsigned long long bigbigpositive;
+  attribute float real;
+  attribute double bigreal; 
+  attribute unrestricted float realwithinfinity;
+  attribute unrestricted double bigrealwithinfinity; 
+  attribute DOMString string; 
+  attribute ByteString bytes; 
+  attribute Date date;
+  attribute RegExp regexp;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/prototyperoot.widl b/testing/web-platform/tests/WebIDL/valid/idl/prototyperoot.widl
new file mode 100644
index 000000000..30dd5cbca
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/prototyperoot.widl
@@ -0,0 +1,5 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+[PrototypeRoot]
+interface Node {
+  readonly attribute unsigned short nodeType;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/putforwards.widl b/testing/web-platform/tests/WebIDL/valid/idl/putforwards.widl
new file mode 100644
index 000000000..1e50a4ee3
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/putforwards.widl
@@ -0,0 +1,5 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Person {
+  [PutForwards=full] readonly attribute Name name;
+  attribute unsigned short age;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/reg-operations.widl b/testing/web-platform/tests/WebIDL/valid/idl/reg-operations.widl
new file mode 100644
index 000000000..13997cb1d
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/reg-operations.widl
@@ -0,0 +1,17 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Dimensions {
+  attribute unsigned long width;
+  attribute unsigned long height;
+};
+
+exception NoPointerDevice { };
+
+interface Button {
+
+  // An operation that takes no arguments, returns a boolean
+  boolean isMouseOver();
+
+  // Overloaded operations.
+  void setDimensions(Dimensions size);
+  void setDimensions(unsigned long width, unsigned long height);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/replaceable.widl b/testing/web-platform/tests/WebIDL/valid/idl/replaceable.widl
new file mode 100644
index 000000000..c14d0c376
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/replaceable.widl
@@ -0,0 +1,5 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Counter {
+  [Replaceable] readonly attribute unsigned long value;
+  void increment();
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/sequence.widl b/testing/web-platform/tests/WebIDL/valid/idl/sequence.widl
new file mode 100644
index 000000000..a1aa931f5
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/sequence.widl
@@ -0,0 +1,7 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+// edited to remove sequence as attributes, now invalid
+interface Canvas {
+  void drawPolygon(sequence<float> coordinates);
+  sequence<float> getInflectionPoints();
+  // ...
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/serializer.widl b/testing/web-platform/tests/WebIDL/valid/idl/serializer.widl
new file mode 100644
index 000000000..6f6ccd0e8
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/serializer.widl
@@ -0,0 +1,64 @@
+interface Transaction {
+  readonly attribute Account from;
+  readonly attribute Account to;
+  readonly attribute float amount;
+  readonly attribute DOMString description;
+  readonly attribute unsigned long number;
+
+  serializer;
+};
+
+interface Account {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer DOMString serialize();
+};
+
+interface Transaction2 {
+  readonly attribute Account2 from;
+  readonly attribute Account2 to;
+  readonly attribute float amount;
+  readonly attribute DOMString description;
+  readonly attribute unsigned long number;
+
+  serializer = { from, to, amount, description };
+};
+
+interface Account2 {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer = number;
+};
+
+interface Account3 {
+  attribute DOMString name;
+  attribute unsigned long number;
+
+  serializer = { attribute };
+};
+
+interface Account4 {
+  getter object getItem(unsigned long index);
+  serializer = { getter };
+};
+
+interface Account5 : Account {
+  attribute DOMString secondname;
+  serializer = { inherit, secondname };
+};
+
+interface Account6 : Account {
+  attribute DOMString secondname;
+  serializer = { inherit, attribute };
+};
+
+interface Account7 {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer = [ name, number ];
+};
+
+interface Account8 {
+  getter object getItem(unsigned long index);
+  serializer = [ getter ];
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/static.widl b/testing/web-platform/tests/WebIDL/valid/idl/static.widl
new file mode 100644
index 000000000..5b2cd3659
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/static.widl
@@ -0,0 +1,11 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Point { /* ... */ };
+
+interface Circle {
+  attribute float cx;
+  attribute float cy;
+  attribute float radius;
+
+  static readonly attribute long triangulationCount;
+  static Point triangulate(Circle c1, Circle c2, Circle c3);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/stringifier-attribute.widl b/testing/web-platform/tests/WebIDL/valid/idl/stringifier-attribute.widl
new file mode 100644
index 000000000..c964ecb93
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/stringifier-attribute.widl
@@ -0,0 +1,6 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+[Constructor]
+interface Student {
+  attribute unsigned long id;
+  stringifier attribute DOMString name;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/stringifier-custom.widl b/testing/web-platform/tests/WebIDL/valid/idl/stringifier-custom.widl
new file mode 100644
index 000000000..b5d7c87e7
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/stringifier-custom.widl
@@ -0,0 +1,9 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+[Constructor]
+interface Student {
+  attribute unsigned long id;
+  attribute DOMString? familyName;
+  attribute DOMString givenName;
+
+  stringifier DOMString ();
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/stringifier.widl b/testing/web-platform/tests/WebIDL/valid/idl/stringifier.widl
new file mode 100644
index 000000000..4eb483d9b
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/stringifier.widl
@@ -0,0 +1,8 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface A {
+  stringifier DOMString ();
+};
+
+interface A {
+  stringifier;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/treatasnull.widl b/testing/web-platform/tests/WebIDL/valid/idl/treatasnull.widl
new file mode 100644
index 000000000..d3c55b008
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/treatasnull.widl
@@ -0,0 +1,7 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Dog {
+  attribute DOMString name;
+  attribute DOMString owner;
+
+  boolean isMemberOfBreed([TreatNullAs=EmptyString] DOMString breedName);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/treatasundefined.widl b/testing/web-platform/tests/WebIDL/valid/idl/treatasundefined.widl
new file mode 100644
index 000000000..e30050f84
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/treatasundefined.widl
@@ -0,0 +1,7 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface Cat {
+  attribute DOMString name;
+  attribute DOMString owner;
+
+  boolean isMemberOfBreed([TreatUndefinedAs=EmptyString] DOMString breedName);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/typedef.widl b/testing/web-platform/tests/WebIDL/valid/idl/typedef.widl
new file mode 100644
index 000000000..b4c17d8d3
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/typedef.widl
@@ -0,0 +1,22 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+      interface Point {
+        attribute float x;
+        attribute float y;
+      };
+
+      typedef sequence<Point> PointSequence;
+
+      interface Rect {
+        attribute Point topleft;
+        attribute Point bottomright;
+      };
+
+  interface Widget {
+
+    readonly attribute Rect bounds;
+
+    boolean pointWithinBounds(Point p);
+    boolean allPointsWithinBounds(PointSequence ps);
+  };
+
+  typedef [Clamp] octet value;
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/typesuffixes.widl b/testing/web-platform/tests/WebIDL/valid/idl/typesuffixes.widl
new file mode 100644
index 000000000..95e31c169
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/typesuffixes.widl
@@ -0,0 +1,3 @@
+interface Suffixes {
+  void test(sequence<DOMString[]?>? foo);
+};
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/uniontype.widl b/testing/web-platform/tests/WebIDL/valid/idl/uniontype.widl
new file mode 100644
index 000000000..4d99f0196
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/uniontype.widl
@@ -0,0 +1,3 @@
+interface Union {
+ attribute (float or (Date or Event) or (Node or DOMString)?) test;
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/idl/variadic-operations.widl b/testing/web-platform/tests/WebIDL/valid/idl/variadic-operations.widl
new file mode 100644
index 000000000..51fae4cc1
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/idl/variadic-operations.widl
@@ -0,0 +1,7 @@
+// Extracted from http://dev.w3.org/2006/webapi/WebIDL/ on 2011-05-06
+interface IntegerSet {
+  readonly attribute unsigned long cardinality;
+
+  void union(long... ints);
+  void intersection(long... ints);
+};
\ No newline at end of file
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/allowany.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/allowany.widlprocxml
new file mode 100644
index 000000000..7da508bcb
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/allowany.widlprocxml
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface B {
+  void g();
+  void g(<ref>B</ref> b);
+  void g([AllowAny] DOMString s);
+};</webidl>
+  <Interface name="B" id="::B">
+    <webidl>interface B {
+  void g();
+  void g(<ref>B</ref> b);
+  void g([AllowAny] DOMString s);
+};</webidl>
+    <Operation name="g" id="::B::g">
+      <webidl>  void g();</webidl>
+      <Type type="void"/>
+      <ArgumentList/>
+    </Operation>
+    <Operation name="g" id="::B::g">
+      <webidl>  void g(<ref>B</ref> b);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="b">
+          <Type name="B"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="g" id="::B::g">
+      <webidl>  void g([AllowAny] DOMString s);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="s">
+          <ExtendedAttributeList>
+            <ExtendedAttribute name="AllowAny">
+              <webidl>AllowAny</webidl>
+            </ExtendedAttribute>
+          </ExtendedAttributeList>
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/array.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/array.widlprocxml
new file mode 100644
index 000000000..3df72ff16
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/array.widlprocxml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>[Constructor]
+interface LotteryResults {
+  readonly attribute unsigned short[][] numbers;
+};</webidl>
+  <Interface name="LotteryResults" id="::LotteryResults">
+    <webidl>[Constructor]
+interface LotteryResults {
+  readonly attribute unsigned short[][] numbers;
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="Constructor">
+        <webidl>Constructor</webidl>
+      </ExtendedAttribute>
+    </ExtendedAttributeList>
+    <Attribute readonly="readonly" name="numbers" id="::LotteryResults::numbers">
+      <webidl>  readonly attribute unsigned short[][] numbers;</webidl>
+      <Type type="array">
+        <Type type="array">
+          <Type type="unsigned short"/>
+        </Type>
+      </Type>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/attributes.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/attributes.widlprocxml
new file mode 100644
index 000000000..89bd8ac9b
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/attributes.widlprocxml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>exception InvalidName {
+  DOMString reason;
+};
+
+exception NoSuchPet { };
+
+interface Person {
+
+  attribute unsigned short age;
+
+};</webidl>
+  <Exception name="InvalidName" id="::InvalidName">
+    <webidl>exception InvalidName {
+  DOMString reason;
+};</webidl>
+    <ExceptionField name="reason" id="::InvalidName::reason">
+      <webidl>  DOMString reason;</webidl>
+      <Type type="DOMString"/>
+    </ExceptionField>
+  </Exception>
+  <Exception name="NoSuchPet" id="::NoSuchPet">
+    <webidl>exception NoSuchPet { };</webidl>
+  </Exception>
+  <Interface name="Person" id="::Person">
+    <webidl>interface Person {
+
+  attribute unsigned short age;
+
+};</webidl>
+    <Attribute name="age" id="::Person::age">
+      <webidl>  attribute unsigned short age;</webidl>
+      <Type type="unsigned short"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/callback.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/callback.widlprocxml
new file mode 100644
index 000000000..9eac06ce2
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/callback.widlprocxml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>callback AsyncOperationCallback = void (DOMString status);
+
+callback interface EventHandler {
+  void eventOccurred(DOMString details);
+};</webidl>
+  <Callback name="AsyncOperationCallback" id="::AsyncOperationCallback">
+    <webidl>callback AsyncOperationCallback = void (DOMString status);</webidl>
+    <Type type="void"/>
+    <ArgumentList>
+      <Argument name="status">
+        <Type type="DOMString"/>
+      </Argument>
+    </ArgumentList>
+  </Callback>
+  <Interface name="EventHandler" callback="callback" id="::EventHandler">
+    <webidl>callback interface EventHandler {
+  void eventOccurred(DOMString details);
+};</webidl>
+    <Operation name="eventOccurred" id="::EventHandler::eventOccurred">
+      <webidl>  void eventOccurred(DOMString details);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="details">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/caller.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/caller.widlprocxml
new file mode 100644
index 000000000..9754d4e02
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/caller.widlprocxml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface NumberQuadrupler {
+  legacycaller float compute(float x);
+};</webidl>
+  <Interface name="NumberQuadrupler" id="::NumberQuadrupler">
+    <webidl>interface NumberQuadrupler {
+  legacycaller float compute(float x);
+};</webidl>
+    <Operation legacycaller="legacycaller" name="compute" id="::NumberQuadrupler::compute">
+      <webidl>  legacycaller float compute(float x);</webidl>
+      <Type type="float"/>
+      <ArgumentList>
+        <Argument name="x">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/constants.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/constants.widlprocxml
new file mode 100644
index 000000000..51cb4331f
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/constants.widlprocxml
@@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Util {
+  const boolean DEBUG = false;
+  const short negative = -1;
+  const octet LF = 10;
+  const unsigned long BIT_MASK = 0x0000fc00;
+  const float AVOGADRO = 6.022e23;
+  const unrestricted float sobig = Infinity;
+  const unrestricted double minusonedividedbyzero = -Infinity;
+  const short notanumber = NaN;
+};
+
+exception Error {
+  const short ERR_UNKNOWN = 0;
+  const short ERR_OUT_OF_MEMORY = 1;
+
+  short errorCode;
+};</webidl>
+  <Interface name="Util" id="::Util">
+    <webidl>interface Util {
+  const boolean DEBUG = false;
+  const short negative = -1;
+  const octet LF = 10;
+  const unsigned long BIT_MASK = 0x0000fc00;
+  const float AVOGADRO = 6.022e23;
+  const unrestricted float sobig = Infinity;
+  const unrestricted double minusonedividedbyzero = -Infinity;
+  const short notanumber = NaN;
+};</webidl>
+    <Const name="DEBUG" value="false" id="::Util::DEBUG">
+      <webidl>  const boolean DEBUG = false;</webidl>
+      <Type type="boolean"/>
+    </Const>
+    <Const name="negative" value="-1" id="::Util::negative">
+      <webidl>  const short negative = -1;</webidl>
+      <Type type="short"/>
+    </Const>
+    <Const name="LF" value="10" id="::Util::LF">
+      <webidl>  const octet LF = 10;</webidl>
+      <Type type="octet"/>
+    </Const>
+    <Const name="BIT_MASK" value="0x0000fc00" id="::Util::BIT_MASK">
+      <webidl>  const unsigned long BIT_MASK = 0x0000fc00;</webidl>
+      <Type type="unsigned long"/>
+    </Const>
+    <Const name="AVOGADRO" value="6.022e23" id="::Util::AVOGADRO">
+      <webidl>  const float AVOGADRO = 6.022e23;</webidl>
+      <Type type="float"/>
+    </Const>
+    <Const name="sobig" value="Infinity" id="::Util::sobig">
+      <webidl>  const unrestricted float sobig = Infinity;</webidl>
+      <Type type="unrestricted float"/>
+    </Const>
+    <Const name="minusonedividedbyzero" value="-Infinity" id="::Util::minusonedividedbyzero">
+      <webidl>  const unrestricted double minusonedividedbyzero = -Infinity;</webidl>
+      <Type type="unrestricted double"/>
+    </Const>
+    <Const name="notanumber" value="NaN" id="::Util::notanumber">
+      <webidl>  const short notanumber = NaN;</webidl>
+      <Type type="short"/>
+    </Const>
+  </Interface>
+  <Exception name="Error" id="::Error">
+    <webidl>exception Error {
+  const short ERR_UNKNOWN = 0;
+  const short ERR_OUT_OF_MEMORY = 1;
+
+  short errorCode;
+};</webidl>
+    <Const name="ERR_UNKNOWN" value="0" id="::Error::ERR_UNKNOWN">
+      <webidl>  const short ERR_UNKNOWN = 0;</webidl>
+      <Type type="short"/>
+    </Const>
+    <Const name="ERR_OUT_OF_MEMORY" value="1" id="::Error::ERR_OUT_OF_MEMORY">
+      <webidl>  const short ERR_OUT_OF_MEMORY = 1;</webidl>
+      <Type type="short"/>
+    </Const>
+    <ExceptionField name="errorCode" id="::Error::errorCode">
+      <webidl>  short errorCode;</webidl>
+      <Type type="short"/>
+    </ExceptionField>
+  </Exception>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/constructor.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/constructor.widlprocxml
new file mode 100644
index 000000000..8e78fbab3
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/constructor.widlprocxml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>[Constructor,
+ Constructor(float radius)]
+interface Circle {
+  attribute float r;
+  attribute float cx;
+  attribute float cy;
+  readonly attribute float circumference;
+};</webidl>
+  <Interface name="Circle" id="::Circle">
+    <webidl>[Constructor,
+ Constructor(float radius)]
+interface Circle {
+  attribute float r;
+  attribute float cx;
+  attribute float cy;
+  readonly attribute float circumference;
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="Constructor">
+        <webidl>Constructor</webidl>
+      </ExtendedAttribute>
+      <ExtendedAttribute name="Constructor">
+        <webidl> Constructor(float radius)</webidl>
+        <ArgumentList>
+          <Argument name="radius">
+            <Type type="float"/>
+          </Argument>
+        </ArgumentList>
+      </ExtendedAttribute>
+    </ExtendedAttributeList>
+    <Attribute name="r" id="::Circle::r">
+      <webidl>  attribute float r;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute name="cx" id="::Circle::cx">
+      <webidl>  attribute float cx;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute name="cy" id="::Circle::cy">
+      <webidl>  attribute float cy;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="circumference" id="::Circle::circumference">
+      <webidl>  readonly attribute float circumference;</webidl>
+      <Type type="float"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/dictionary-inherits.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/dictionary-inherits.widlprocxml
new file mode 100644
index 000000000..269a83cd8
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/dictionary-inherits.widlprocxml
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>dictionary PaintOptions {
+  DOMString? fillPattern = &quot;black&quot;;
+  DOMString? strokePattern = null;
+  <ref>Point</ref> position;
+};
+
+dictionary WetPaintOptions : <ref>PaintOptions</ref> {
+  float hydrometry;
+};</webidl>
+  <Dictionary name="PaintOptions" id="::PaintOptions">
+    <webidl>dictionary PaintOptions {
+  DOMString? fillPattern = &quot;black&quot;;
+  DOMString? strokePattern = null;
+  <ref>Point</ref> position;
+};</webidl>
+    <DictionaryMember name="fillPattern" stringvalue="black" id="::PaintOptions::fillPattern">
+      <webidl>  DOMString? fillPattern = &quot;black&quot;;</webidl>
+      <Type type="DOMString" nullable="nullable"/>
+    </DictionaryMember>
+    <DictionaryMember name="strokePattern" value="null" id="::PaintOptions::strokePattern">
+      <webidl>  DOMString? strokePattern = null;</webidl>
+      <Type type="DOMString" nullable="nullable"/>
+    </DictionaryMember>
+    <DictionaryMember name="position" id="::PaintOptions::position">
+      <webidl>  <ref>Point</ref> position;</webidl>
+      <Type name="Point"/>
+    </DictionaryMember>
+  </Dictionary>
+  <Dictionary name="WetPaintOptions" id="::WetPaintOptions">
+    <webidl>dictionary WetPaintOptions : <ref>PaintOptions</ref> {
+  float hydrometry;
+};</webidl>
+    <DictionaryInheritance>
+      <Name name="PaintOptions"/>
+    </DictionaryInheritance>
+    <DictionaryMember name="hydrometry" id="::WetPaintOptions::hydrometry">
+      <webidl>  float hydrometry;</webidl>
+      <Type type="float"/>
+    </DictionaryMember>
+  </Dictionary>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/dictionary.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/dictionary.widlprocxml
new file mode 100644
index 000000000..978ccb4e2
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/dictionary.widlprocxml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>dictionary PaintOptions {
+  DOMString? fillPattern = &quot;black&quot;;
+  DOMString? strokePattern = null;
+  <ref>Point</ref> position;
+};
+
+partial dictionary A {
+  long h;
+  long d;
+};</webidl>
+  <Dictionary name="PaintOptions" id="::PaintOptions">
+    <webidl>dictionary PaintOptions {
+  DOMString? fillPattern = &quot;black&quot;;
+  DOMString? strokePattern = null;
+  <ref>Point</ref> position;
+};</webidl>
+    <DictionaryMember name="fillPattern" stringvalue="black" id="::PaintOptions::fillPattern">
+      <webidl>  DOMString? fillPattern = &quot;black&quot;;</webidl>
+      <Type type="DOMString" nullable="nullable"/>
+    </DictionaryMember>
+    <DictionaryMember name="strokePattern" value="null" id="::PaintOptions::strokePattern">
+      <webidl>  DOMString? strokePattern = null;</webidl>
+      <Type type="DOMString" nullable="nullable"/>
+    </DictionaryMember>
+    <DictionaryMember name="position" id="::PaintOptions::position">
+      <webidl>  <ref>Point</ref> position;</webidl>
+      <Type name="Point"/>
+    </DictionaryMember>
+  </Dictionary>
+  <Dictionary name="A" partial="partial" id="::A">
+    <webidl>partial dictionary A {
+  long h;
+  long d;
+};</webidl>
+    <DictionaryMember name="h" id="::A::h">
+      <webidl>  long h;</webidl>
+      <Type type="long"/>
+    </DictionaryMember>
+    <DictionaryMember name="d" id="::A::d">
+      <webidl>  long d;</webidl>
+      <Type type="long"/>
+    </DictionaryMember>
+  </Dictionary>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/documentation-dos.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/documentation-dos.widlprocxml
new file mode 100644
index 000000000..1611f0e57
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/documentation-dos.widlprocxml
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Documentation {};</webidl>
+  <Interface name="Documentation" id="::Documentation">
+    <webidl>interface Documentation {};</webidl>
+    <descriptive>
+        <brief>
+ Testing documentation features
+        </brief>
+       <description>
+        <p>
+This is a
+single paragraph
+        </p>
+        <p>
+This is valid.        </p>
+        <p>
+This is <em>valid</em>.        </p>
+        <p>
+This is <b>valid</b>.        </p>
+        <p>
+This is <a href=''>valid</a>.        </p>
+        <ul>
+          <li>
+This          </li>
+          <li>
+is          </li>
+          <li>
+valid          </li>
+        </ul>
+        <dl>
+          <dt>
+This          </dt>
+          <dd>
+valid          </dd>
+        </dl>
+        <table>
+          <tr>
+            <td>
+this            </td>
+            <td>
+is            </td>
+          </tr>
+          <tr>
+            <td>
+valid            </td>
+          </tr>
+        </table>
+        <p>
+This is <br/> valid.        </p>
+        <p>
+This is <br /> valid.        </p>
+        <p>
+This is <br/> valid.        </p>
+       </description>
+    </descriptive>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/documentation.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/documentation.widlprocxml
new file mode 100644
index 000000000..afe4527c2
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/documentation.widlprocxml
@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Documentation {};</webidl>
+  <Interface name="Documentation" id="::Documentation">
+    <webidl>interface Documentation {};</webidl>
+    <descriptive>
+        <brief>
+ Testing documentation features
+        </brief>
+       <description>
+        <p>
+This is a
+single paragraph
+        </p>
+        <p>
+This is valid.        </p>
+        <p>
+This is <em>valid</em>.        </p>
+        <p>
+This is <b>valid</b>.        </p>
+        <p>
+This is <a href=''>valid</a>.        </p>
+        <ul>
+          <li>
+This          </li>
+          <li>
+is          </li>
+          <li>
+valid          </li>
+        </ul>
+        <dl>
+          <dt>
+This          </dt>
+          <dd>
+valid          </dd>
+        </dl>
+        <table>
+          <tr>
+            <td>
+this            </td>
+            <td>
+is            </td>
+          </tr>
+          <tr>
+            <td>
+valid            </td>
+          </tr>
+        </table>
+        <p>
+This is <br/> valid.        </p>
+        <p>
+This is <br /> valid.        </p>
+        <p>
+This is <br/> valid.        </p>
+        <p>
+<img src="foo.png" alt="Valid"/>        </p>
+       </description>
+    </descriptive>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/enum.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/enum.widlprocxml
new file mode 100644
index 000000000..e1e8258fb
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/enum.widlprocxml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>enum MealType { &quot;rice&quot;, &quot;noodles&quot;, &quot;other&quot; };
+
+interface Meal {
+  attribute <ref>MealType</ref> type;
+  attribute float size;     
+
+  void initialize(<ref>MealType</ref> type, float size);
+};</webidl>
+  <Enum name="MealType" id="::MealType">
+    <webidl>enum MealType { &quot;rice&quot;, &quot;noodles&quot;, &quot;other&quot; };</webidl>
+    <EnumValue stringvalue="rice">
+      <webidl> &quot;rice</webidl>
+    </EnumValue>
+    <EnumValue stringvalue="noodles">
+      <webidl> &quot;noodles</webidl>
+    </EnumValue>
+    <EnumValue stringvalue="other">
+      <webidl> &quot;other</webidl>
+    </EnumValue>
+  </Enum>
+  <Interface name="Meal" id="::Meal">
+    <webidl>interface Meal {
+  attribute <ref>MealType</ref> type;
+  attribute float size;     
+
+  void initialize(<ref>MealType</ref> type, float size);
+};</webidl>
+    <Attribute name="type" id="::Meal::type">
+      <webidl>  attribute <ref>MealType</ref> type;</webidl>
+      <Type name="MealType"/>
+    </Attribute>
+    <Attribute name="size" id="::Meal::size">
+      <webidl>  attribute float size;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Operation name="initialize" id="::Meal::initialize">
+      <webidl>  void initialize(<ref>MealType</ref> type, float size);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="type">
+          <Type name="MealType"/>
+        </Argument>
+        <Argument name="size">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/equivalent-decl.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/equivalent-decl.widlprocxml
new file mode 100644
index 000000000..c322d0a5e
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/equivalent-decl.widlprocxml
@@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  getter float getProperty(DOMString propertyName);
+  setter void setProperty(DOMString propertyName, float propertyValue);
+};
+
+
+interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  float getProperty(DOMString propertyName);
+  void setProperty(DOMString propertyName, float propertyValue);
+
+  getter float (DOMString propertyName);
+  setter void (DOMString propertyName, float propertyValue);
+};</webidl>
+  <Interface name="Dictionary" id="::Dictionary">
+    <webidl>interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  getter float getProperty(DOMString propertyName);
+  setter void setProperty(DOMString propertyName, float propertyValue);
+};</webidl>
+    <Attribute readonly="readonly" name="propertyCount" id="::Dictionary::propertyCount">
+      <webidl>  readonly attribute unsigned long propertyCount;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation getter="getter" name="getProperty" id="::Dictionary::getProperty">
+      <webidl>  getter float getProperty(DOMString propertyName);</webidl>
+      <Type type="float"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation setter="setter" name="setProperty" id="::Dictionary::setProperty">
+      <webidl>  setter void setProperty(DOMString propertyName, float propertyValue);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument name="propertyValue">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+  <Interface name="Dictionary" id="::Dictionary">
+    <webidl>interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  float getProperty(DOMString propertyName);
+  void setProperty(DOMString propertyName, float propertyValue);
+
+  getter float (DOMString propertyName);
+  setter void (DOMString propertyName, float propertyValue);
+};</webidl>
+    <Attribute readonly="readonly" name="propertyCount" id="::Dictionary::propertyCount">
+      <webidl>  readonly attribute unsigned long propertyCount;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation name="getProperty" id="::Dictionary::getProperty">
+      <webidl>  float getProperty(DOMString propertyName);</webidl>
+      <Type type="float"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="setProperty" id="::Dictionary::setProperty">
+      <webidl>  void setProperty(DOMString propertyName, float propertyValue);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument name="propertyValue">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation getter="getter">
+      <webidl>  getter float (DOMString propertyName);</webidl>
+      <Type type="float"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation setter="setter">
+      <webidl>  setter void (DOMString propertyName, float propertyValue);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument name="propertyValue">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/exception-inheritance.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/exception-inheritance.widlprocxml
new file mode 100644
index 000000000..3a1f868a4
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/exception-inheritance.widlprocxml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>  exception DOMException {
+    unsigned short code;
+  };
+
+  exception HierarchyRequestError : <ref>DOMException</ref> { };
+  exception NoModificationAllowedError : <ref>DOMException</ref> { };</webidl>
+  <Exception name="DOMException" id="::DOMException">
+    <webidl>  exception DOMException {
+    unsigned short code;
+  };</webidl>
+    <ExceptionField name="code" id="::DOMException::code">
+      <webidl>    unsigned short code;</webidl>
+      <Type type="unsigned short"/>
+    </ExceptionField>
+  </Exception>
+  <Exception name="HierarchyRequestError" id="::HierarchyRequestError">
+    <webidl>  exception HierarchyRequestError : <ref>DOMException</ref> { };</webidl>
+    <ExceptionInheritance>
+      <Name name="DOMException"/>
+    </ExceptionInheritance>
+  </Exception>
+  <Exception name="NoModificationAllowedError" id="::NoModificationAllowedError">
+    <webidl>  exception NoModificationAllowedError : <ref>DOMException</ref> { };</webidl>
+    <ExceptionInheritance>
+      <Name name="DOMException"/>
+    </ExceptionInheritance>
+  </Exception>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/exception.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/exception.widlprocxml
new file mode 100644
index 000000000..ac93320fe
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/exception.widlprocxml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Dahut {
+  attribute DOMString type;
+};
+
+exception SomeException {
+};</webidl>
+  <Interface name="Dahut" id="::Dahut">
+    <webidl>interface Dahut {
+  attribute DOMString type;
+};</webidl>
+    <Attribute name="type" id="::Dahut::type">
+      <webidl>  attribute DOMString type;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+  <Exception name="SomeException" id="::SomeException">
+    <webidl>exception SomeException {
+};</webidl>
+  </Exception>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/getter-setter.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/getter-setter.widlprocxml
new file mode 100644
index 000000000..76afc058c
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/getter-setter.widlprocxml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  getter float (DOMString propertyName);
+  setter void (DOMString propertyName, float propertyValue);
+};</webidl>
+  <Interface name="Dictionary" id="::Dictionary">
+    <webidl>interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  getter float (DOMString propertyName);
+  setter void (DOMString propertyName, float propertyValue);
+};</webidl>
+    <Attribute readonly="readonly" name="propertyCount" id="::Dictionary::propertyCount">
+      <webidl>  readonly attribute unsigned long propertyCount;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation getter="getter">
+      <webidl>  getter float (DOMString propertyName);</webidl>
+      <Type type="float"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation setter="setter">
+      <webidl>  setter void (DOMString propertyName, float propertyValue);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument name="propertyValue">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/identifier-qualified-names.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/identifier-qualified-names.widlprocxml
new file mode 100644
index 000000000..b6024e5ff
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/identifier-qualified-names.widlprocxml
@@ -0,0 +1,107 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>  typedef float number;
+
+  exception FrameworkException {
+
+    const long ERR_NOT_FOUND = 1;
+
+    long code;
+  };
+
+  interface System {
+
+    object createObject(DOMString _interface);
+
+    getter DOMString (DOMString keyName);
+  };
+
+    
+    interface TextField {
+
+      attribute boolean _const;
+
+      attribute DOMString? _value;
+    };
+
+interface Foo {
+ void op(object interface);
+};</webidl>
+  <Typedef name="number" id="::number">
+    <webidl>  typedef float number;</webidl>
+    <Type type="float"/>
+  </Typedef>
+  <Exception name="FrameworkException" id="::FrameworkException">
+    <webidl>  exception FrameworkException {
+
+    const long ERR_NOT_FOUND = 1;
+
+    long code;
+  };</webidl>
+    <Const name="ERR_NOT_FOUND" value="1" id="::FrameworkException::ERR_NOT_FOUND">
+      <webidl>    const long ERR_NOT_FOUND = 1;</webidl>
+      <Type type="long"/>
+    </Const>
+    <ExceptionField name="code" id="::FrameworkException::code">
+      <webidl>    long code;</webidl>
+      <Type type="long"/>
+    </ExceptionField>
+  </Exception>
+  <Interface name="System" id="::System">
+    <webidl>  interface System {
+
+    object createObject(DOMString _interface);
+
+    getter DOMString (DOMString keyName);
+  };</webidl>
+    <Operation name="createObject" id="::System::createObject">
+      <webidl>    object createObject(DOMString _interface);</webidl>
+      <Type type="object"/>
+      <ArgumentList>
+        <Argument name="_interface">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation getter="getter">
+      <webidl>    getter DOMString (DOMString keyName);</webidl>
+      <Type type="DOMString"/>
+      <ArgumentList>
+        <Argument name="keyName">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+  <Interface name="TextField" id="::TextField">
+    <webidl>    interface TextField {
+
+      attribute boolean _const;
+
+      attribute DOMString? _value;
+    };</webidl>
+    <Attribute name="_const" id="::TextField::_const">
+      <webidl>      attribute boolean _const;</webidl>
+      <Type type="boolean"/>
+    </Attribute>
+    <Attribute name="_value" id="::TextField::_value">
+      <webidl>      attribute DOMString? _value;</webidl>
+      <Type type="DOMString" nullable="nullable"/>
+    </Attribute>
+  </Interface>
+  <Interface name="Foo" id="::Foo">
+    <webidl>interface Foo {
+ void op(object interface);
+};</webidl>
+    <Operation name="op" id="::Foo::op">
+      <webidl> void op(object interface);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="interface">
+          <Type type="object"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/implements.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/implements.widlprocxml
new file mode 100644
index 000000000..3d1c1ab84
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/implements.widlprocxml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>  interface Node {
+    readonly attribute unsigned short nodeType;
+  };
+
+  interface EventTarget {
+    void addEventListener(DOMString type,
+                          <ref>EventListener</ref> listener,
+                          boolean useCapture);
+  };
+
+  <ref>Node</ref> implements <ref>EventTarget</ref>;</webidl>
+  <Interface name="Node" id="::Node">
+    <webidl>  interface Node {
+    readonly attribute unsigned short nodeType;
+  };</webidl>
+    <Attribute readonly="readonly" name="nodeType" id="::Node::nodeType">
+      <webidl>    readonly attribute unsigned short nodeType;</webidl>
+      <Type type="unsigned short"/>
+    </Attribute>
+  </Interface>
+  <Interface name="EventTarget" id="::EventTarget">
+    <webidl>  interface EventTarget {
+    void addEventListener(DOMString type,
+                          <ref>EventListener</ref> listener,
+                          boolean useCapture);
+  };</webidl>
+    <Operation name="addEventListener" id="::EventTarget::addEventListener">
+      <webidl>    void addEventListener(DOMString type,
+                          <ref>EventListener</ref> listener,
+                          boolean useCapture);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="type">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument name="listener">
+          <Type name="EventListener"/>
+        </Argument>
+        <Argument name="useCapture">
+          <Type type="boolean"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+  <Implements name1="Node" name2="EventTarget">
+    <webidl>  <ref>Node</ref> implements <ref>EventTarget</ref>;</webidl>
+  </Implements>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/indexed-properties.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/indexed-properties.widlprocxml
new file mode 100644
index 000000000..fb83621b6
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/indexed-properties.widlprocxml
@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface OrderedMap {
+  readonly attribute unsigned long size;
+
+  getter any getByIndex(unsigned long index);
+  setter void setByIndex(unsigned long index, any value);
+  deleter void removeByIndex(unsigned long index);
+
+  getter any get(DOMString name);
+  setter creator void set(DOMString name, any value);
+  deleter void remove(DOMString name);
+};</webidl>
+  <Interface name="OrderedMap" id="::OrderedMap">
+    <webidl>interface OrderedMap {
+  readonly attribute unsigned long size;
+
+  getter any getByIndex(unsigned long index);
+  setter void setByIndex(unsigned long index, any value);
+  deleter void removeByIndex(unsigned long index);
+
+  getter any get(DOMString name);
+  setter creator void set(DOMString name, any value);
+  deleter void remove(DOMString name);
+};</webidl>
+    <Attribute readonly="readonly" name="size" id="::OrderedMap::size">
+      <webidl>  readonly attribute unsigned long size;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation getter="getter" name="getByIndex" id="::OrderedMap::getByIndex">
+      <webidl>  getter any getByIndex(unsigned long index);</webidl>
+      <Type type="any"/>
+      <ArgumentList>
+        <Argument name="index">
+          <Type type="unsigned long"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation setter="setter" name="setByIndex" id="::OrderedMap::setByIndex">
+      <webidl>  setter void setByIndex(unsigned long index, any value);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="index">
+          <Type type="unsigned long"/>
+        </Argument>
+        <Argument name="value">
+          <Type type="any"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation deleter="deleter" name="removeByIndex" id="::OrderedMap::removeByIndex">
+      <webidl>  deleter void removeByIndex(unsigned long index);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="index">
+          <Type type="unsigned long"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation getter="getter" name="get" id="::OrderedMap::get">
+      <webidl>  getter any get(DOMString name);</webidl>
+      <Type type="any"/>
+      <ArgumentList>
+        <Argument name="name">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation setter="setter" creator="creator" name="set" id="::OrderedMap::set">
+      <webidl>  setter creator void set(DOMString name, any value);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="name">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument name="value">
+          <Type type="any"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation deleter="deleter" name="remove" id="::OrderedMap::remove">
+      <webidl>  deleter void remove(DOMString name);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="name">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/inherits-getter.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/inherits-getter.widlprocxml
new file mode 100644
index 000000000..55e7a317f
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/inherits-getter.widlprocxml
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Animal {
+
+  readonly attribute DOMString name;
+};
+
+interface Person : <ref>Animal</ref> {
+
+  readonly attribute unsigned short age;
+
+  inherit attribute DOMString name;
+};</webidl>
+  <Interface name="Animal" id="::Animal">
+    <webidl>interface Animal {
+
+  readonly attribute DOMString name;
+};</webidl>
+    <Attribute readonly="readonly" name="name" id="::Animal::name">
+      <webidl>  readonly attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+  <Interface name="Person" id="::Person">
+    <webidl>interface Person : <ref>Animal</ref> {
+
+  readonly attribute unsigned short age;
+
+  inherit attribute DOMString name;
+};</webidl>
+    <InterfaceInheritance>
+      <Name name="Animal"/>
+    </InterfaceInheritance>
+    <Attribute readonly="readonly" name="age" id="::Person::age">
+      <webidl>  readonly attribute unsigned short age;</webidl>
+      <Type type="unsigned short"/>
+    </Attribute>
+    <Attribute inherit="inherit" name="name" id="::Person::name">
+      <webidl>  inherit attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/interface-inherits.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/interface-inherits.widlprocxml
new file mode 100644
index 000000000..94f0e29df
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/interface-inherits.widlprocxml
@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Animal {
+  attribute DOMString name;
+};
+
+interface Human : <ref>Animal</ref> {
+  attribute <ref>Dog</ref> pet;
+};
+
+interface Dog : <ref>Animal</ref> {
+  attribute <ref>Human</ref> owner;
+};</webidl>
+  <Interface name="Animal" id="::Animal">
+    <webidl>interface Animal {
+  attribute DOMString name;
+};</webidl>
+    <Attribute name="name" id="::Animal::name">
+      <webidl>  attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+  <Interface name="Human" id="::Human">
+    <webidl>interface Human : <ref>Animal</ref> {
+  attribute <ref>Dog</ref> pet;
+};</webidl>
+    <InterfaceInheritance>
+      <Name name="Animal"/>
+    </InterfaceInheritance>
+    <Attribute name="pet" id="::Human::pet">
+      <webidl>  attribute <ref>Dog</ref> pet;</webidl>
+      <Type name="Dog"/>
+    </Attribute>
+  </Interface>
+  <Interface name="Dog" id="::Dog">
+    <webidl>interface Dog : <ref>Animal</ref> {
+  attribute <ref>Human</ref> owner;
+};</webidl>
+    <InterfaceInheritance>
+      <Name name="Animal"/>
+    </InterfaceInheritance>
+    <Attribute name="owner" id="::Dog::owner">
+      <webidl>  attribute <ref>Human</ref> owner;</webidl>
+      <Type name="Human"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/iterator.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/iterator.widlprocxml
new file mode 100644
index 000000000..8ca95fbbd
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/iterator.widlprocxml
@@ -0,0 +1,132 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface SessionManager {
+  <ref>Session</ref> getSessionForUser(DOMString username);
+  readonly attribute unsigned long sessionCount;
+
+  <ref>Session</ref> iterator;
+};
+
+interface Session {
+  readonly attribute DOMString username;
+};
+
+interface SessionManager2 {
+  <ref>Session2</ref> getSessionForUser(DOMString username);
+  readonly attribute unsigned long sessionCount;
+
+  <ref>Session2</ref> iterator = SessionIterator;
+};
+
+interface Session2 {
+  readonly attribute DOMString username;
+};
+
+interface SessionIterator {
+  readonly attribute unsigned long remainingSessions;
+};
+
+     interface NodeList {
+       <ref>Node</ref> iterator = NodeIterator;
+     };
+
+     interface NodeIterator {
+       <ref>Node</ref> iterator object;
+     };</webidl>
+  <Interface name="SessionManager" id="::SessionManager">
+    <webidl>interface SessionManager {
+  <ref>Session</ref> getSessionForUser(DOMString username);
+  readonly attribute unsigned long sessionCount;
+
+  <ref>Session</ref> iterator;
+};</webidl>
+    <Operation name="getSessionForUser" id="::SessionManager::getSessionForUser">
+      <webidl>  <ref>Session</ref> getSessionForUser(DOMString username);</webidl>
+      <Type name="Session"/>
+      <ArgumentList>
+        <Argument name="username">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Attribute readonly="readonly" name="sessionCount" id="::SessionManager::sessionCount">
+      <webidl>  readonly attribute unsigned long sessionCount;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Iterator>
+      <webidl>  <ref>Session</ref> iterator;</webidl>
+      <Type name="Session"/>
+    </Iterator>
+  </Interface>
+  <Interface name="Session" id="::Session">
+    <webidl>interface Session {
+  readonly attribute DOMString username;
+};</webidl>
+    <Attribute readonly="readonly" name="username" id="::Session::username">
+      <webidl>  readonly attribute DOMString username;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+  <Interface name="SessionManager2" id="::SessionManager2">
+    <webidl>interface SessionManager2 {
+  <ref>Session2</ref> getSessionForUser(DOMString username);
+  readonly attribute unsigned long sessionCount;
+
+  <ref>Session2</ref> iterator = SessionIterator;
+};</webidl>
+    <Operation name="getSessionForUser" id="::SessionManager2::getSessionForUser">
+      <webidl>  <ref>Session2</ref> getSessionForUser(DOMString username);</webidl>
+      <Type name="Session2"/>
+      <ArgumentList>
+        <Argument name="username">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Attribute readonly="readonly" name="sessionCount" id="::SessionManager2::sessionCount">
+      <webidl>  readonly attribute unsigned long sessionCount;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Iterator interface="SessionIterator">
+      <webidl>  <ref>Session2</ref> iterator = SessionIterator;</webidl>
+      <Type name="Session2"/>
+    </Iterator>
+  </Interface>
+  <Interface name="Session2" id="::Session2">
+    <webidl>interface Session2 {
+  readonly attribute DOMString username;
+};</webidl>
+    <Attribute readonly="readonly" name="username" id="::Session2::username">
+      <webidl>  readonly attribute DOMString username;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+  <Interface name="SessionIterator" id="::SessionIterator">
+    <webidl>interface SessionIterator {
+  readonly attribute unsigned long remainingSessions;
+};</webidl>
+    <Attribute readonly="readonly" name="remainingSessions" id="::SessionIterator::remainingSessions">
+      <webidl>  readonly attribute unsigned long remainingSessions;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+  </Interface>
+  <Interface name="NodeList" id="::NodeList">
+    <webidl>     interface NodeList {
+       <ref>Node</ref> iterator = NodeIterator;
+     };</webidl>
+    <Iterator interface="NodeIterator">
+      <webidl>       <ref>Node</ref> iterator = NodeIterator;</webidl>
+      <Type name="Node"/>
+    </Iterator>
+  </Interface>
+  <Interface name="NodeIterator" id="::NodeIterator">
+    <webidl>     interface NodeIterator {
+       <ref>Node</ref> iterator object;
+     };</webidl>
+    <IteratorObject>
+      <webidl>       <ref>Node</ref> iterator object;</webidl>
+      <Type name="Node"/>
+    </IteratorObject>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/module.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/module.widlprocxml
new file mode 100644
index 000000000..b575b8705
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/module.widlprocxml
@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <Module name="gfx" id="::gfx">
+    <webidl>module gfx {
+
+  module geom {
+    interface Shape {  };
+    interface Rectangle : <ref>Shape</ref> {  };
+    interface Path : <ref>Shape</ref> {  };
+  };
+
+  interface GraphicsContext {
+    void fillShape(<ref>geom::Shape</ref> s);
+    void strokeShape(<ref>geom::Shape</ref> s);
+  };
+};</webidl>
+    <Module name="geom" id="::gfx::geom">
+      <webidl>  module geom {
+    interface Shape {  };
+    interface Rectangle : <ref>Shape</ref> {  };
+    interface Path : <ref>Shape</ref> {  };
+  };</webidl>
+      <Interface name="Shape" id="::gfx::geom::Shape">
+        <webidl>    interface Shape {  };</webidl>
+      </Interface>
+      <Interface name="Rectangle" id="::gfx::geom::Rectangle">
+        <webidl>    interface Rectangle : <ref>Shape</ref> {  };</webidl>
+        <InterfaceInheritance>
+          <Name name="Shape"/>
+        </InterfaceInheritance>
+      </Interface>
+      <Interface name="Path" id="::gfx::geom::Path">
+        <webidl>    interface Path : <ref>Shape</ref> {  };</webidl>
+        <InterfaceInheritance>
+          <Name name="Shape"/>
+        </InterfaceInheritance>
+      </Interface>
+    </Module>
+    <Interface name="GraphicsContext" id="::gfx::GraphicsContext">
+      <webidl>  interface GraphicsContext {
+    void fillShape(<ref>geom::Shape</ref> s);
+    void strokeShape(<ref>geom::Shape</ref> s);
+  };</webidl>
+      <Operation name="fillShape" id="::gfx::GraphicsContext::fillShape">
+        <webidl>    void fillShape(<ref>geom::Shape</ref> s);</webidl>
+        <Type type="void"/>
+        <ArgumentList>
+          <Argument name="s">
+            <Type name="geom::Shape"/>
+          </Argument>
+        </ArgumentList>
+      </Operation>
+      <Operation name="strokeShape" id="::gfx::GraphicsContext::strokeShape">
+        <webidl>    void strokeShape(<ref>geom::Shape</ref> s);</webidl>
+        <Type type="void"/>
+        <ArgumentList>
+          <Argument name="s">
+            <Type name="geom::Shape"/>
+          </Argument>
+        </ArgumentList>
+      </Operation>
+    </Interface>
+  </Module>
+  <Module name="gui" id="::gui">
+    <webidl>module gui {
+
+  interface Widget {   };
+
+  interface Window : <ref>Widget</ref> {
+    <ref>gfx::GraphicsContext</ref> getGraphicsContext();
+  };
+
+  interface Button : <ref>Widget</ref> {   };
+};</webidl>
+    <Interface name="Widget" id="::gui::Widget">
+      <webidl>  interface Widget {   };</webidl>
+    </Interface>
+    <Interface name="Window" id="::gui::Window">
+      <webidl>  interface Window : <ref>Widget</ref> {
+    <ref>gfx::GraphicsContext</ref> getGraphicsContext();
+  };</webidl>
+      <InterfaceInheritance>
+        <Name name="Widget"/>
+      </InterfaceInheritance>
+      <Operation name="getGraphicsContext" id="::gui::Window::getGraphicsContext">
+        <webidl>    <ref>gfx::GraphicsContext</ref> getGraphicsContext();</webidl>
+        <Type name="gfx::GraphicsContext"/>
+        <ArgumentList/>
+      </Operation>
+    </Interface>
+    <Interface name="Button" id="::gui::Button">
+      <webidl>  interface Button : <ref>Widget</ref> {   };</webidl>
+      <InterfaceInheritance>
+        <Name name="Widget"/>
+      </InterfaceInheritance>
+    </Interface>
+  </Module>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/namedconstructor.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/namedconstructor.widlprocxml
new file mode 100644
index 000000000..9f6616128
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/namedconstructor.widlprocxml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>[NamedConstructor=Audio,
+ NamedConstructor=Audio(DOMString src)]
+interface HTMLAudioElement : <ref>HTMLMediaElement</ref> {
+};</webidl>
+  <Interface name="HTMLAudioElement" id="::HTMLAudioElement">
+    <webidl>[NamedConstructor=Audio,
+ NamedConstructor=Audio(DOMString src)]
+interface HTMLAudioElement : <ref>HTMLMediaElement</ref> {
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="NamedConstructor" value="Audio">
+        <webidl>NamedConstructor</webidl>
+      </ExtendedAttribute>
+      <ExtendedAttribute name="NamedConstructor" value="Audio">
+        <webidl> NamedConstructor=Audio(DOMString src)</webidl>
+        <ArgumentList>
+          <Argument name="src">
+            <Type type="DOMString"/>
+          </Argument>
+        </ArgumentList>
+      </ExtendedAttribute>
+    </ExtendedAttributeList>
+    <InterfaceInheritance>
+      <Name name="HTMLMediaElement"/>
+    </InterfaceInheritance>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/namespaceobject.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/namespaceobject.widlprocxml
new file mode 100644
index 000000000..af0cde937
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/namespaceobject.widlprocxml
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <Module name="acme" id="::acme">
+    <webidl>[NamespaceObject]
+module acme {
+  
+  exception DeviceException { };
+
+  module pim {
+
+    [Constructor]
+    interface Contact { };
+
+    [Constructor,
+     NamedConstructor=RecurringEvent(long freq)]
+    interface CalendarEvent { };
+  };
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="NamespaceObject"/>
+    </ExtendedAttributeList>
+    <Exception name="DeviceException" id="::acme::DeviceException">
+      <webidl>  exception DeviceException { };</webidl>
+    </Exception>
+    <Module name="pim" id="::acme::pim">
+      <webidl>  module pim {
+
+    [Constructor]
+    interface Contact { };
+
+    [Constructor,
+     NamedConstructor=RecurringEvent(long freq)]
+    interface CalendarEvent { };
+  };</webidl>
+      <Interface name="Contact" id="::acme::pim::Contact">
+        <webidl>    [Constructor]
+    interface Contact { };</webidl>
+        <ExtendedAttributeList>
+          <ExtendedAttribute name="Constructor"/>
+        </ExtendedAttributeList>
+      </Interface>
+      <Interface name="CalendarEvent" id="::acme::pim::CalendarEvent">
+        <webidl>    [Constructor,
+     NamedConstructor=RecurringEvent(long freq)]
+    interface CalendarEvent { };</webidl>
+        <ExtendedAttributeList>
+          <ExtendedAttribute name="Constructor"/>
+          <ExtendedAttribute name="NamedConstructor" value="RecurringEvent">
+            <ArgumentList>
+              <Argument name="freq">
+                <Type type="long"/>
+              </Argument>
+            </ArgumentList>
+          </ExtendedAttribute>
+        </ExtendedAttributeList>
+      </Interface>
+    </Module>
+  </Module>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/nointerfaceobject.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/nointerfaceobject.widlprocxml
new file mode 100644
index 000000000..f64f116b6
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/nointerfaceobject.widlprocxml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>[NoInterfaceObject]
+interface Query {
+  any lookupEntry(unsigned long key);
+};</webidl>
+  <Interface name="Query" id="::Query">
+    <webidl>[NoInterfaceObject]
+interface Query {
+  any lookupEntry(unsigned long key);
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="NoInterfaceObject">
+        <webidl>NoInterfaceObject</webidl>
+      </ExtendedAttribute>
+    </ExtendedAttributeList>
+    <Operation name="lookupEntry" id="::Query::lookupEntry">
+      <webidl>  any lookupEntry(unsigned long key);</webidl>
+      <Type type="any"/>
+      <ArgumentList>
+        <Argument name="key">
+          <Type type="unsigned long"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/nullable.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/nullable.widlprocxml
new file mode 100644
index 000000000..8739e4432
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/nullable.widlprocxml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface MyConstants {
+  const boolean? ARE_WE_THERE_YET = false;
+};
+
+interface Node {
+  readonly attribute DOMString? namespaceURI;
+};</webidl>
+  <Interface name="MyConstants" id="::MyConstants">
+    <webidl>interface MyConstants {
+  const boolean? ARE_WE_THERE_YET = false;
+};</webidl>
+    <Const name="ARE_WE_THERE_YET" value="false" id="::MyConstants::ARE_WE_THERE_YET">
+      <webidl>  const boolean? ARE_WE_THERE_YET = false;</webidl>
+      <Type type="boolean" nullable="nullable"/>
+    </Const>
+  </Interface>
+  <Interface name="Node" id="::Node">
+    <webidl>interface Node {
+  readonly attribute DOMString? namespaceURI;
+};</webidl>
+    <Attribute readonly="readonly" name="namespaceURI" id="::Node::namespaceURI">
+      <webidl>  readonly attribute DOMString? namespaceURI;</webidl>
+      <Type type="DOMString" nullable="nullable"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/nullableobjects.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/nullableobjects.widlprocxml
new file mode 100644
index 000000000..22d9fdd25
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/nullableobjects.widlprocxml
@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface A {
+};
+interface B {
+};
+interface C {
+  void f(<ref>A</ref>? x);
+  void f(<ref>B</ref>? x);
+
+};</webidl>
+  <Interface name="A" id="::A">
+    <webidl>interface A {
+};</webidl>
+  </Interface>
+  <Interface name="B" id="::B">
+    <webidl>interface B {
+};</webidl>
+  </Interface>
+  <Interface name="C" id="::C">
+    <webidl>interface C {
+  void f(<ref>A</ref>? x);
+  void f(<ref>B</ref>? x);
+
+};</webidl>
+    <Operation name="f" id="::C::f">
+      <webidl>  void f(<ref>A</ref>? x);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="x">
+          <Type name="A" nullable="nullable"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="f" id="::C::f">
+      <webidl>  void f(<ref>B</ref>? x);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="x">
+          <Type name="B" nullable="nullable"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/operation-optional-arg.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/operation-optional-arg.widlprocxml
new file mode 100644
index 000000000..54aef1f87
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/operation-optional-arg.widlprocxml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface ColorCreator {
+  object createColor(float v1, float v2, float v3, optional float alpha = 3.5);
+};</webidl>
+  <Interface name="ColorCreator" id="::ColorCreator">
+    <webidl>interface ColorCreator {
+  object createColor(float v1, float v2, float v3, optional float alpha = 3.5);
+};</webidl>
+    <Operation name="createColor" id="::ColorCreator::createColor">
+      <webidl>  object createColor(float v1, float v2, float v3, optional float alpha = 3.5);</webidl>
+      <Type type="object"/>
+      <ArgumentList>
+        <Argument name="v1">
+          <Type type="float"/>
+        </Argument>
+        <Argument name="v2">
+          <Type type="float"/>
+        </Argument>
+        <Argument name="v3">
+          <Type type="float"/>
+        </Argument>
+        <Argument optional="optional" name="alpha" value="3.5">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/overloading.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/overloading.widlprocxml
new file mode 100644
index 000000000..db6da7a68
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/overloading.widlprocxml
@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface A {
+};
+
+interface B {
+};
+
+interface C {
+  void f(<ref>A</ref> x);
+  void f(<ref>B</ref> x);
+};
+
+interface A {
+void f(DOMString a);
+void f([AllowAny] DOMString a, DOMString b, float... c);
+void f();
+void f(long a, DOMString b, optional DOMString c, float... d);
+};</webidl>
+  <Interface name="A" id="::A">
+    <webidl>interface A {
+};</webidl>
+  </Interface>
+  <Interface name="B" id="::B">
+    <webidl>interface B {
+};</webidl>
+  </Interface>
+  <Interface name="C" id="::C">
+    <webidl>interface C {
+  void f(<ref>A</ref> x);
+  void f(<ref>B</ref> x);
+};</webidl>
+    <Operation name="f" id="::C::f">
+      <webidl>  void f(<ref>A</ref> x);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="x">
+          <Type name="A"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="f" id="::C::f">
+      <webidl>  void f(<ref>B</ref> x);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="x">
+          <Type name="B"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+  <Interface name="A" id="::A">
+    <webidl>interface A {
+void f(DOMString a);
+void f([AllowAny] DOMString a, DOMString b, float... c);
+void f();
+void f(long a, DOMString b, optional DOMString c, float... d);
+};</webidl>
+    <Operation name="f" id="::A::f">
+      <webidl> void f(DOMString a);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="a">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="f" id="::A::f">
+      <webidl> void f([AllowAny] DOMString a, DOMString b, float... c);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="a">
+          <ExtendedAttributeList>
+            <ExtendedAttribute name="AllowAny">
+              <webidl>AllowAny</webidl>
+            </ExtendedAttribute>
+          </ExtendedAttributeList>
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument name="b">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument ellipsis="ellipsis" name="c">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="f" id="::A::f">
+      <webidl> void f();</webidl>
+      <Type type="void"/>
+      <ArgumentList/>
+    </Operation>
+    <Operation name="f" id="::A::f">
+      <webidl> void f(long a, DOMString b, optional DOMString c, float... d);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="a">
+          <Type type="long"/>
+        </Argument>
+        <Argument name="b">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument optional="optional" name="c">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument ellipsis="ellipsis" name="d">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/overridebuiltins.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/overridebuiltins.widlprocxml
new file mode 100644
index 000000000..56c92517b
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/overridebuiltins.widlprocxml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>[OverrideBuiltins]
+interface StringMap2 {
+  readonly attribute unsigned long length;
+  getter DOMString lookup(DOMString key);
+};</webidl>
+  <Interface name="StringMap2" id="::StringMap2">
+    <webidl>[OverrideBuiltins]
+interface StringMap2 {
+  readonly attribute unsigned long length;
+  getter DOMString lookup(DOMString key);
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="OverrideBuiltins">
+        <webidl>OverrideBuiltins</webidl>
+      </ExtendedAttribute>
+    </ExtendedAttributeList>
+    <Attribute readonly="readonly" name="length" id="::StringMap2::length">
+      <webidl>  readonly attribute unsigned long length;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation getter="getter" name="lookup" id="::StringMap2::lookup">
+      <webidl>  getter DOMString lookup(DOMString key);</webidl>
+      <Type type="DOMString"/>
+      <ArgumentList>
+        <Argument name="key">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/partial-interface.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/partial-interface.widlprocxml
new file mode 100644
index 000000000..8d7dcb4e4
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/partial-interface.widlprocxml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Foo {
+  attribute DOMString bar;
+};
+
+partial interface Foo {
+  attribute DOMString quux;
+};</webidl>
+  <Interface name="Foo" id="::Foo">
+    <webidl>interface Foo {
+  attribute DOMString bar;
+};</webidl>
+    <Attribute name="bar" id="::Foo::bar">
+      <webidl>  attribute DOMString bar;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+  <Interface name="Foo" partial="partial" id="::Foo">
+    <webidl>partial interface Foo {
+  attribute DOMString quux;
+};</webidl>
+    <Attribute name="quux" id="::Foo::quux">
+      <webidl>  attribute DOMString quux;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/primitives.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/primitives.widlprocxml
new file mode 100644
index 000000000..46977a2d7
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/primitives.widlprocxml
@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Primitives {
+  attribute boolean truth;
+  attribute byte character;
+  attribute octet value;
+  attribute short number;
+  attribute unsigned short positive;
+  attribute long big;
+  attribute unsigned long bigpositive;
+  attribute long long bigbig;
+  attribute  unsigned long long bigbigpositive;
+  attribute float real;
+  attribute double bigreal; 
+  attribute unrestricted float realwithinfinity;
+  attribute unrestricted double bigrealwithinfinity; 
+  attribute DOMString string; 
+  attribute ByteString bytes; 
+  attribute Date date;
+  attribute RegExp regexp;
+};</webidl>
+  <Interface name="Primitives" id="::Primitives">
+    <webidl>interface Primitives {
+  attribute boolean truth;
+  attribute byte character;
+  attribute octet value;
+  attribute short number;
+  attribute unsigned short positive;
+  attribute long big;
+  attribute unsigned long bigpositive;
+  attribute long long bigbig;
+  attribute  unsigned long long bigbigpositive;
+  attribute float real;
+  attribute double bigreal; 
+  attribute unrestricted float realwithinfinity;
+  attribute unrestricted double bigrealwithinfinity; 
+  attribute DOMString string; 
+  attribute ByteString bytes; 
+  attribute Date date;
+  attribute RegExp regexp;
+};</webidl>
+    <Attribute name="truth" id="::Primitives::truth">
+      <webidl>  attribute boolean truth;</webidl>
+      <Type type="boolean"/>
+    </Attribute>
+    <Attribute name="character" id="::Primitives::character">
+      <webidl>  attribute byte character;</webidl>
+      <Type type="byte"/>
+    </Attribute>
+    <Attribute name="value" id="::Primitives::value">
+      <webidl>  attribute octet value;</webidl>
+      <Type type="octet"/>
+    </Attribute>
+    <Attribute name="number" id="::Primitives::number">
+      <webidl>  attribute short number;</webidl>
+      <Type type="short"/>
+    </Attribute>
+    <Attribute name="positive" id="::Primitives::positive">
+      <webidl>  attribute unsigned short positive;</webidl>
+      <Type type="unsigned short"/>
+    </Attribute>
+    <Attribute name="big" id="::Primitives::big">
+      <webidl>  attribute long big;</webidl>
+      <Type type="long"/>
+    </Attribute>
+    <Attribute name="bigpositive" id="::Primitives::bigpositive">
+      <webidl>  attribute unsigned long bigpositive;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Attribute name="bigbig" id="::Primitives::bigbig">
+      <webidl>  attribute long long bigbig;</webidl>
+      <Type type="long long"/>
+    </Attribute>
+    <Attribute name="bigbigpositive" id="::Primitives::bigbigpositive">
+      <webidl>  attribute  unsigned long long bigbigpositive;</webidl>
+      <Type type="unsigned long long"/>
+    </Attribute>
+    <Attribute name="real" id="::Primitives::real">
+      <webidl>  attribute float real;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute name="bigreal" id="::Primitives::bigreal">
+      <webidl>  attribute double bigreal;</webidl>
+      <Type type="double"/>
+    </Attribute>
+    <Attribute name="realwithinfinity" id="::Primitives::realwithinfinity">
+      <webidl>  attribute unrestricted float realwithinfinity;</webidl>
+      <Type type="unrestricted float"/>
+    </Attribute>
+    <Attribute name="bigrealwithinfinity" id="::Primitives::bigrealwithinfinity">
+      <webidl>  attribute unrestricted double bigrealwithinfinity;</webidl>
+      <Type type="unrestricted double"/>
+    </Attribute>
+    <Attribute name="string" id="::Primitives::string">
+      <webidl>  attribute DOMString string;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute name="bytes" id="::Primitives::bytes">
+      <webidl>  attribute ByteString bytes;</webidl>
+      <Type type="ByteString"/>
+    </Attribute>
+    <Attribute name="date" id="::Primitives::date">
+      <webidl>  attribute Date date;</webidl>
+      <Type type="Date"/>
+    </Attribute>
+    <Attribute name="regexp" id="::Primitives::regexp">
+      <webidl>  attribute RegExp regexp;</webidl>
+      <Type type="RegExp"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/prototyperoot.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/prototyperoot.widlprocxml
new file mode 100644
index 000000000..2e56cd75e
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/prototyperoot.widlprocxml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>[PrototypeRoot]
+interface Node {
+  readonly attribute unsigned short nodeType;
+};</webidl>
+  <Interface name="Node" id="::Node">
+    <webidl>[PrototypeRoot]
+interface Node {
+  readonly attribute unsigned short nodeType;
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="PrototypeRoot">
+        <webidl>PrototypeRoot</webidl>
+      </ExtendedAttribute>
+    </ExtendedAttributeList>
+    <Attribute readonly="readonly" name="nodeType" id="::Node::nodeType">
+      <webidl>  readonly attribute unsigned short nodeType;</webidl>
+      <Type type="unsigned short"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/putforwards.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/putforwards.widlprocxml
new file mode 100644
index 000000000..634fad55a
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/putforwards.widlprocxml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Person {
+  [PutForwards=full] readonly attribute <ref>Name</ref> name;
+  attribute unsigned short age;
+};</webidl>
+  <Interface name="Person" id="::Person">
+    <webidl>interface Person {
+  [PutForwards=full] readonly attribute <ref>Name</ref> name;
+  attribute unsigned short age;
+};</webidl>
+    <Attribute readonly="readonly" name="name" id="::Person::name">
+      <webidl>  [PutForwards=full] readonly attribute <ref>Name</ref> name;</webidl>
+      <ExtendedAttributeList>
+        <ExtendedAttribute name="PutForwards" value="full">
+          <webidl>PutForwards</webidl>
+        </ExtendedAttribute>
+      </ExtendedAttributeList>
+      <Type name="Name"/>
+    </Attribute>
+    <Attribute name="age" id="::Person::age">
+      <webidl>  attribute unsigned short age;</webidl>
+      <Type type="unsigned short"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/reg-operations.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/reg-operations.widlprocxml
new file mode 100644
index 000000000..3b756ed68
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/reg-operations.widlprocxml
@@ -0,0 +1,70 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Dimensions {
+  attribute unsigned long width;
+  attribute unsigned long height;
+};
+
+exception NoPointerDevice { };
+
+interface Button {
+
+  boolean isMouseOver();
+
+  void setDimensions(<ref>Dimensions</ref> size);
+  void setDimensions(unsigned long width, unsigned long height);
+};</webidl>
+  <Interface name="Dimensions" id="::Dimensions">
+    <webidl>interface Dimensions {
+  attribute unsigned long width;
+  attribute unsigned long height;
+};</webidl>
+    <Attribute name="width" id="::Dimensions::width">
+      <webidl>  attribute unsigned long width;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Attribute name="height" id="::Dimensions::height">
+      <webidl>  attribute unsigned long height;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+  </Interface>
+  <Exception name="NoPointerDevice" id="::NoPointerDevice">
+    <webidl>exception NoPointerDevice { };</webidl>
+  </Exception>
+  <Interface name="Button" id="::Button">
+    <webidl>interface Button {
+
+  boolean isMouseOver();
+
+  void setDimensions(<ref>Dimensions</ref> size);
+  void setDimensions(unsigned long width, unsigned long height);
+};</webidl>
+    <Operation name="isMouseOver" id="::Button::isMouseOver">
+      <webidl>  boolean isMouseOver();</webidl>
+      <Type type="boolean"/>
+      <ArgumentList/>
+    </Operation>
+    <Operation name="setDimensions" id="::Button::setDimensions">
+      <webidl>  void setDimensions(<ref>Dimensions</ref> size);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="size">
+          <Type name="Dimensions"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="setDimensions" id="::Button::setDimensions">
+      <webidl>  void setDimensions(unsigned long width, unsigned long height);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="width">
+          <Type type="unsigned long"/>
+        </Argument>
+        <Argument name="height">
+          <Type type="unsigned long"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/replaceable.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/replaceable.widlprocxml
new file mode 100644
index 000000000..f97621668
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/replaceable.widlprocxml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Counter {
+  [Replaceable] readonly attribute unsigned long value;
+  void increment();
+};</webidl>
+  <Interface name="Counter" id="::Counter">
+    <webidl>interface Counter {
+  [Replaceable] readonly attribute unsigned long value;
+  void increment();
+};</webidl>
+    <Attribute readonly="readonly" name="value" id="::Counter::value">
+      <webidl>  [Replaceable] readonly attribute unsigned long value;</webidl>
+      <ExtendedAttributeList>
+        <ExtendedAttribute name="Replaceable">
+          <webidl>Replaceable</webidl>
+        </ExtendedAttribute>
+      </ExtendedAttributeList>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation name="increment" id="::Counter::increment">
+      <webidl>  void increment();</webidl>
+      <Type type="void"/>
+      <ArgumentList/>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/sequence.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/sequence.widlprocxml
new file mode 100644
index 000000000..d5f456417
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/sequence.widlprocxml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Canvas {
+  void drawPolygon(sequence&lt;float> coordinates);
+  sequence&lt;float> getInflectionPoints();
+};</webidl>
+  <Interface name="Canvas" id="::Canvas">
+    <webidl>interface Canvas {
+  void drawPolygon(sequence&lt;float> coordinates);
+  sequence&lt;float> getInflectionPoints();
+};</webidl>
+    <Operation name="drawPolygon" id="::Canvas::drawPolygon">
+      <webidl>  void drawPolygon(sequence&lt;float> coordinates);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="coordinates">
+          <Type type="sequence">
+            <Type type="float"/>
+          </Type>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="getInflectionPoints" id="::Canvas::getInflectionPoints">
+      <webidl>  sequence&lt;float> getInflectionPoints();</webidl>
+      <Type type="sequence">
+        <Type type="float"/>
+      </Type>
+      <ArgumentList/>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/serializer.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/serializer.widlprocxml
new file mode 100644
index 000000000..eb4219f8a
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/serializer.widlprocxml
@@ -0,0 +1,296 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Transaction {
+  readonly attribute <ref>Account</ref> from;
+  readonly attribute <ref>Account</ref> to;
+  readonly attribute float amount;
+  readonly attribute DOMString description;
+  readonly attribute unsigned long number;
+
+  serializer;
+};
+
+interface Account {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer DOMString serialize();
+};
+
+interface Transaction2 {
+  readonly attribute <ref>Account2</ref> from;
+  readonly attribute <ref>Account2</ref> to;
+  readonly attribute float amount;
+  readonly attribute DOMString description;
+  readonly attribute unsigned long number;
+
+  serializer = { from, to, amount, description };
+};
+
+interface Account2 {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer = number;
+};
+
+interface Account3 {
+  attribute DOMString name;
+  attribute unsigned long number;
+
+  serializer = { attribute };
+};
+
+interface Account4 {
+  getter object getItem(unsigned long index);
+  serializer = { getter };
+};
+
+interface Account5 : <ref>Account</ref> {
+  attribute DOMString secondname;
+  serializer = { inherit, secondname };
+};
+
+interface Account6 : <ref>Account</ref> {
+  attribute DOMString secondname;
+  serializer = { inherit, attribute };
+};
+
+interface Account7 {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer = [ name, number ];
+};
+
+interface Account8 {
+  getter object getItem(unsigned long index);
+  serializer = [ getter ];
+};</webidl>
+  <Interface name="Transaction" id="::Transaction">
+    <webidl>interface Transaction {
+  readonly attribute <ref>Account</ref> from;
+  readonly attribute <ref>Account</ref> to;
+  readonly attribute float amount;
+  readonly attribute DOMString description;
+  readonly attribute unsigned long number;
+
+  serializer;
+};</webidl>
+    <Attribute readonly="readonly" name="from" id="::Transaction::from">
+      <webidl>  readonly attribute <ref>Account</ref> from;</webidl>
+      <Type name="Account"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="to" id="::Transaction::to">
+      <webidl>  readonly attribute <ref>Account</ref> to;</webidl>
+      <Type name="Account"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="amount" id="::Transaction::amount">
+      <webidl>  readonly attribute float amount;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="description" id="::Transaction::description">
+      <webidl>  readonly attribute DOMString description;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="number" id="::Transaction::number">
+      <webidl>  readonly attribute unsigned long number;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Serializer>
+      <webidl>  serializer;</webidl>
+    </Serializer>
+  </Interface>
+  <Interface name="Account" id="::Account">
+    <webidl>interface Account {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer DOMString serialize();
+};</webidl>
+    <Attribute name="name" id="::Account::name">
+      <webidl>  attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute name="number" id="::Account::number">
+      <webidl>  attribute unsigned long number;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation serializer="serializer" name="serialize" id="::Account::serialize">
+      <webidl>  serializer DOMString serialize();</webidl>
+      <Type type="DOMString"/>
+      <ArgumentList/>
+    </Operation>
+  </Interface>
+  <Interface name="Transaction2" id="::Transaction2">
+    <webidl>interface Transaction2 {
+  readonly attribute <ref>Account2</ref> from;
+  readonly attribute <ref>Account2</ref> to;
+  readonly attribute float amount;
+  readonly attribute DOMString description;
+  readonly attribute unsigned long number;
+
+  serializer = { from, to, amount, description };
+};</webidl>
+    <Attribute readonly="readonly" name="from" id="::Transaction2::from">
+      <webidl>  readonly attribute <ref>Account2</ref> from;</webidl>
+      <Type name="Account2"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="to" id="::Transaction2::to">
+      <webidl>  readonly attribute <ref>Account2</ref> to;</webidl>
+      <Type name="Account2"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="amount" id="::Transaction2::amount">
+      <webidl>  readonly attribute float amount;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="description" id="::Transaction2::description">
+      <webidl>  readonly attribute DOMString description;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute readonly="readonly" name="number" id="::Transaction2::number">
+      <webidl>  readonly attribute unsigned long number;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Serializer>
+      <webidl>  serializer = { from, to, amount, description };</webidl>
+      <Map pattern="selection">
+        <PatternAttribute name="from"/>
+        <PatternAttribute name="to"/>
+        <PatternAttribute name="amount"/>
+        <PatternAttribute name="description"/>
+      </Map>
+    </Serializer>
+  </Interface>
+  <Interface name="Account2" id="::Account2">
+    <webidl>interface Account2 {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer = number;
+};</webidl>
+    <Attribute name="name" id="::Account2::name">
+      <webidl>  attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute name="number" id="::Account2::number">
+      <webidl>  attribute unsigned long number;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Serializer attribute="number">
+      <webidl>  serializer = number;</webidl>
+    </Serializer>
+  </Interface>
+  <Interface name="Account3" id="::Account3">
+    <webidl>interface Account3 {
+  attribute DOMString name;
+  attribute unsigned long number;
+
+  serializer = { attribute };
+};</webidl>
+    <Attribute name="name" id="::Account3::name">
+      <webidl>  attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute name="number" id="::Account3::number">
+      <webidl>  attribute unsigned long number;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Serializer>
+      <webidl>  serializer = { attribute };</webidl>
+      <Map pattern="all"/>
+    </Serializer>
+  </Interface>
+  <Interface name="Account4" id="::Account4">
+    <webidl>interface Account4 {
+  getter object getItem(unsigned long index);
+  serializer = { getter };
+};</webidl>
+    <Operation getter="getter" name="getItem" id="::Account4::getItem">
+      <webidl>  getter object getItem(unsigned long index);</webidl>
+      <Type type="object"/>
+      <ArgumentList>
+        <Argument name="index">
+          <Type type="unsigned long"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Serializer>
+      <webidl>  serializer = { getter };</webidl>
+      <Map pattern="getter"/>
+    </Serializer>
+  </Interface>
+  <Interface name="Account5" id="::Account5">
+    <webidl>interface Account5 : <ref>Account</ref> {
+  attribute DOMString secondname;
+  serializer = { inherit, secondname };
+};</webidl>
+    <InterfaceInheritance>
+      <Name name="Account"/>
+    </InterfaceInheritance>
+    <Attribute name="secondname" id="::Account5::secondname">
+      <webidl>  attribute DOMString secondname;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Serializer>
+      <webidl>  serializer = { inherit, secondname };</webidl>
+      <Map inherit="inherit" pattern="selection">
+        <PatternAttribute name="secondname"/>
+      </Map>
+    </Serializer>
+  </Interface>
+  <Interface name="Account6" id="::Account6">
+    <webidl>interface Account6 : <ref>Account</ref> {
+  attribute DOMString secondname;
+  serializer = { inherit, attribute };
+};</webidl>
+    <InterfaceInheritance>
+      <Name name="Account"/>
+    </InterfaceInheritance>
+    <Attribute name="secondname" id="::Account6::secondname">
+      <webidl>  attribute DOMString secondname;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Serializer>
+      <webidl>  serializer = { inherit, attribute };</webidl>
+      <Map inherit="inherit" pattern="all"/>
+    </Serializer>
+  </Interface>
+  <Interface name="Account7" id="::Account7">
+    <webidl>interface Account7 {
+  attribute DOMString name;
+  attribute unsigned long number;
+  serializer = [ name, number ];
+};</webidl>
+    <Attribute name="name" id="::Account7::name">
+      <webidl>  attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute name="number" id="::Account7::number">
+      <webidl>  attribute unsigned long number;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Serializer>
+      <webidl>  serializer = [ name, number ];</webidl>
+      <List pattern="selection">
+        <PatternAttribute name="name"/>
+        <PatternAttribute name="number"/>
+      </List>
+    </Serializer>
+  </Interface>
+  <Interface name="Account8" id="::Account8">
+    <webidl>interface Account8 {
+  getter object getItem(unsigned long index);
+  serializer = [ getter ];
+};</webidl>
+    <Operation getter="getter" name="getItem" id="::Account8::getItem">
+      <webidl>  getter object getItem(unsigned long index);</webidl>
+      <Type type="object"/>
+      <ArgumentList>
+        <Argument name="index">
+          <Type type="unsigned long"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Serializer>
+      <webidl>  serializer = [ getter ];</webidl>
+      <List pattern="getter"/>
+    </Serializer>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/special-omittable.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/special-omittable.widlprocxml
new file mode 100644
index 000000000..1986d190a
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/special-omittable.widlprocxml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <Interface name="Dictionary" id="::Dictionary">
+    <webidl>interface Dictionary {
+  readonly attribute unsigned long propertyCount;
+
+  omittable getter float getProperty(DOMString propertyName);
+  omittable setter void setProperty(DOMString propertyName, float propertyValue);
+};</webidl>
+    <Attribute readonly="readonly" name="propertyCount" id="::Dictionary::propertyCount">
+      <webidl>  readonly attribute unsigned long propertyCount;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation omittable="omittable" getter="getter" name="getProperty" id="::Dictionary::getProperty">
+      <webidl>  omittable getter float getProperty(DOMString propertyName);</webidl>
+      <Type type="float"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation omittable="omittable" setter="setter" name="setProperty" id="::Dictionary::setProperty">
+      <webidl>  omittable setter void setProperty(DOMString propertyName, float propertyValue);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="propertyName">
+          <Type type="DOMString"/>
+        </Argument>
+        <Argument name="propertyValue">
+          <Type type="float"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/static.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/static.widlprocxml
new file mode 100644
index 000000000..03c14e16e
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/static.widlprocxml
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Point {  };
+
+interface Circle {
+  attribute float cx;
+  attribute float cy;
+  attribute float radius;
+
+  static readonly attribute long triangulationCount;
+  static <ref>Point</ref> triangulate(<ref>Circle</ref> c1, <ref>Circle</ref> c2, <ref>Circle</ref> c3);
+};</webidl>
+  <Interface name="Point" id="::Point">
+    <webidl>interface Point {  };</webidl>
+  </Interface>
+  <Interface name="Circle" id="::Circle">
+    <webidl>interface Circle {
+  attribute float cx;
+  attribute float cy;
+  attribute float radius;
+
+  static readonly attribute long triangulationCount;
+  static <ref>Point</ref> triangulate(<ref>Circle</ref> c1, <ref>Circle</ref> c2, <ref>Circle</ref> c3);
+};</webidl>
+    <Attribute name="cx" id="::Circle::cx">
+      <webidl>  attribute float cx;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute name="cy" id="::Circle::cy">
+      <webidl>  attribute float cy;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute name="radius" id="::Circle::radius">
+      <webidl>  attribute float radius;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute static="static" readonly="readonly" name="triangulationCount" id="::Circle::triangulationCount">
+      <webidl>  static readonly attribute long triangulationCount;</webidl>
+      <Type type="long"/>
+    </Attribute>
+    <Operation static="static" name="triangulate" id="::Circle::triangulate">
+      <webidl>  static <ref>Point</ref> triangulate(<ref>Circle</ref> c1, <ref>Circle</ref> c2, <ref>Circle</ref> c3);</webidl>
+      <Type name="Point"/>
+      <ArgumentList>
+        <Argument name="c1">
+          <Type name="Circle"/>
+        </Argument>
+        <Argument name="c2">
+          <Type name="Circle"/>
+        </Argument>
+        <Argument name="c3">
+          <Type name="Circle"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/stringifier-attribute.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/stringifier-attribute.widlprocxml
new file mode 100644
index 000000000..082ce4d34
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/stringifier-attribute.widlprocxml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>[Constructor]
+interface Student {
+  attribute unsigned long id;
+  stringifier attribute DOMString name;
+};</webidl>
+  <Interface name="Student" id="::Student">
+    <webidl>[Constructor]
+interface Student {
+  attribute unsigned long id;
+  stringifier attribute DOMString name;
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="Constructor">
+        <webidl>Constructor</webidl>
+      </ExtendedAttribute>
+    </ExtendedAttributeList>
+    <Attribute name="id" id="::Student::id">
+      <webidl>  attribute unsigned long id;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Attribute stringifier="stringifier" name="name" id="::Student::name">
+      <webidl>  stringifier attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/stringifier-custom.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/stringifier-custom.widlprocxml
new file mode 100644
index 000000000..cdab1ccfc
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/stringifier-custom.widlprocxml
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>[Constructor]
+interface Student {
+  attribute unsigned long id;
+  attribute DOMString? familyName;
+  attribute DOMString givenName;
+
+  stringifier DOMString ();
+};</webidl>
+  <Interface name="Student" id="::Student">
+    <webidl>[Constructor]
+interface Student {
+  attribute unsigned long id;
+  attribute DOMString? familyName;
+  attribute DOMString givenName;
+
+  stringifier DOMString ();
+};</webidl>
+    <ExtendedAttributeList>
+      <ExtendedAttribute name="Constructor">
+        <webidl>Constructor</webidl>
+      </ExtendedAttribute>
+    </ExtendedAttributeList>
+    <Attribute name="id" id="::Student::id">
+      <webidl>  attribute unsigned long id;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Attribute name="familyName" id="::Student::familyName">
+      <webidl>  attribute DOMString? familyName;</webidl>
+      <Type type="DOMString" nullable="nullable"/>
+    </Attribute>
+    <Attribute name="givenName" id="::Student::givenName">
+      <webidl>  attribute DOMString givenName;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Operation stringifier="stringifier">
+      <webidl>  stringifier DOMString ();</webidl>
+      <Type type="DOMString"/>
+      <ArgumentList/>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/stringifier.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/stringifier.widlprocxml
new file mode 100644
index 000000000..4a18b80b7
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/stringifier.widlprocxml
@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface A {
+  stringifier DOMString ();
+};
+
+interface A {
+  stringifier;
+};</webidl>
+  <Interface name="A" id="::A">
+    <webidl>interface A {
+  stringifier DOMString ();
+};</webidl>
+    <Operation stringifier="stringifier">
+      <webidl>  stringifier DOMString ();</webidl>
+      <Type type="DOMString"/>
+      <ArgumentList/>
+    </Operation>
+  </Interface>
+  <Interface name="A" id="::A">
+    <webidl>interface A {
+  stringifier;
+};</webidl>
+    <Stringifier>
+      <webidl>  stringifier;</webidl>
+    </Stringifier>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/treatasnull.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/treatasnull.widlprocxml
new file mode 100644
index 000000000..a57ae163f
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/treatasnull.widlprocxml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Dog {
+  attribute DOMString name;
+  attribute DOMString owner;
+
+  boolean isMemberOfBreed([TreatNullAs=EmptyString] DOMString breedName);
+};</webidl>
+  <Interface name="Dog" id="::Dog">
+    <webidl>interface Dog {
+  attribute DOMString name;
+  attribute DOMString owner;
+
+  boolean isMemberOfBreed([TreatNullAs=EmptyString] DOMString breedName);
+};</webidl>
+    <Attribute name="name" id="::Dog::name">
+      <webidl>  attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute name="owner" id="::Dog::owner">
+      <webidl>  attribute DOMString owner;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Operation name="isMemberOfBreed" id="::Dog::isMemberOfBreed">
+      <webidl>  boolean isMemberOfBreed([TreatNullAs=EmptyString] DOMString breedName);</webidl>
+      <Type type="boolean"/>
+      <ArgumentList>
+        <Argument name="breedName">
+          <ExtendedAttributeList>
+            <ExtendedAttribute name="TreatNullAs" value="EmptyString">
+              <webidl>TreatNullAs</webidl>
+            </ExtendedAttribute>
+          </ExtendedAttributeList>
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/treatasundefined.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/treatasundefined.widlprocxml
new file mode 100644
index 000000000..17e71081d
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/treatasundefined.widlprocxml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Cat {
+  attribute DOMString name;
+  attribute DOMString owner;
+
+  boolean isMemberOfBreed([TreatUndefinedAs=EmptyString] DOMString breedName);
+};</webidl>
+  <Interface name="Cat" id="::Cat">
+    <webidl>interface Cat {
+  attribute DOMString name;
+  attribute DOMString owner;
+
+  boolean isMemberOfBreed([TreatUndefinedAs=EmptyString] DOMString breedName);
+};</webidl>
+    <Attribute name="name" id="::Cat::name">
+      <webidl>  attribute DOMString name;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Attribute name="owner" id="::Cat::owner">
+      <webidl>  attribute DOMString owner;</webidl>
+      <Type type="DOMString"/>
+    </Attribute>
+    <Operation name="isMemberOfBreed" id="::Cat::isMemberOfBreed">
+      <webidl>  boolean isMemberOfBreed([TreatUndefinedAs=EmptyString] DOMString breedName);</webidl>
+      <Type type="boolean"/>
+      <ArgumentList>
+        <Argument name="breedName">
+          <ExtendedAttributeList>
+            <ExtendedAttribute name="TreatUndefinedAs" value="EmptyString">
+              <webidl>TreatUndefinedAs</webidl>
+            </ExtendedAttribute>
+          </ExtendedAttributeList>
+          <Type type="DOMString"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/typedef.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/typedef.widlprocxml
new file mode 100644
index 000000000..785f6706e
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/typedef.widlprocxml
@@ -0,0 +1,100 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>      interface Point {
+        attribute float x;
+        attribute float y;
+      };
+
+      typedef sequence&lt;<ref>Point</ref>> PointSequence;
+
+      interface Rect {
+        attribute <ref>Point</ref> topleft;
+        attribute <ref>Point</ref> bottomright;
+      };
+
+  interface Widget {
+
+    readonly attribute <ref>Rect</ref> bounds;
+
+    boolean pointWithinBounds(<ref>Point</ref> p);
+    boolean allPointsWithinBounds(<ref>PointSequence</ref> ps);
+  };
+
+  typedef [Clamp] octet value;</webidl>
+  <Interface name="Point" id="::Point">
+    <webidl>      interface Point {
+        attribute float x;
+        attribute float y;
+      };</webidl>
+    <Attribute name="x" id="::Point::x">
+      <webidl>        attribute float x;</webidl>
+      <Type type="float"/>
+    </Attribute>
+    <Attribute name="y" id="::Point::y">
+      <webidl>        attribute float y;</webidl>
+      <Type type="float"/>
+    </Attribute>
+  </Interface>
+  <Typedef name="PointSequence" id="::PointSequence">
+    <webidl>      typedef sequence&lt;<ref>Point</ref>> PointSequence;</webidl>
+    <Type type="sequence">
+      <Type name="Point"/>
+    </Type>
+  </Typedef>
+  <Interface name="Rect" id="::Rect">
+    <webidl>      interface Rect {
+        attribute <ref>Point</ref> topleft;
+        attribute <ref>Point</ref> bottomright;
+      };</webidl>
+    <Attribute name="topleft" id="::Rect::topleft">
+      <webidl>        attribute <ref>Point</ref> topleft;</webidl>
+      <Type name="Point"/>
+    </Attribute>
+    <Attribute name="bottomright" id="::Rect::bottomright">
+      <webidl>        attribute <ref>Point</ref> bottomright;</webidl>
+      <Type name="Point"/>
+    </Attribute>
+  </Interface>
+  <Interface name="Widget" id="::Widget">
+    <webidl>  interface Widget {
+
+    readonly attribute <ref>Rect</ref> bounds;
+
+    boolean pointWithinBounds(<ref>Point</ref> p);
+    boolean allPointsWithinBounds(<ref>PointSequence</ref> ps);
+  };</webidl>
+    <Attribute readonly="readonly" name="bounds" id="::Widget::bounds">
+      <webidl>    readonly attribute <ref>Rect</ref> bounds;</webidl>
+      <Type name="Rect"/>
+    </Attribute>
+    <Operation name="pointWithinBounds" id="::Widget::pointWithinBounds">
+      <webidl>    boolean pointWithinBounds(<ref>Point</ref> p);</webidl>
+      <Type type="boolean"/>
+      <ArgumentList>
+        <Argument name="p">
+          <Type name="Point"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="allPointsWithinBounds" id="::Widget::allPointsWithinBounds">
+      <webidl>    boolean allPointsWithinBounds(<ref>PointSequence</ref> ps);</webidl>
+      <Type type="boolean"/>
+      <ArgumentList>
+        <Argument name="ps">
+          <Type name="PointSequence"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+  <Typedef name="value" id="::value">
+    <webidl>  typedef [Clamp] octet value;</webidl>
+    <Type type="octet">
+      <ExtendedAttributeList>
+        <ExtendedAttribute name="Clamp">
+          <webidl>Clamp</webidl>
+        </ExtendedAttribute>
+      </ExtendedAttributeList>
+    </Type>
+  </Typedef>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/typesuffixes.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/typesuffixes.widlprocxml
new file mode 100644
index 000000000..830fe62bc
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/typesuffixes.widlprocxml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Suffixes {
+  void test(sequence&lt;DOMString[]?>? foo);
+};</webidl>
+  <Interface name="Suffixes" id="::Suffixes">
+    <webidl>interface Suffixes {
+  void test(sequence&lt;DOMString[]?>? foo);
+};</webidl>
+    <Operation name="test" id="::Suffixes::test">
+      <webidl>  void test(sequence&lt;DOMString[]?>? foo);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument name="foo">
+          <Type type="sequence" nullable="nullable">
+            <Type type="array" nullable="nullable">
+              <Type type="DOMString"/>
+            </Type>
+          </Type>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/uniontype.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/uniontype.widlprocxml
new file mode 100644
index 000000000..7d0880799
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/uniontype.widlprocxml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface Union {
+ attribute (float or (Date or <ref>Event</ref>) or (<ref>Node</ref> or DOMString)?) test;
+};</webidl>
+  <Interface name="Union" id="::Union">
+    <webidl>interface Union {
+ attribute (float or (Date or <ref>Event</ref>) or (<ref>Node</ref> or DOMString)?) test;
+};</webidl>
+    <Attribute name="test" id="::Union::test">
+      <webidl> attribute (float or (Date or <ref>Event</ref>) or (<ref>Node</ref> or DOMString)?) test;</webidl>
+      <Type type="union">
+        <Type type="float"/>
+        <Type type="union">
+          <Type type="Date"/>
+          <Type name="Event"/>
+        </Type>
+        <Type type="union" nullable="nullable">
+          <Type name="Node"/>
+          <Type type="DOMString"/>
+        </Type>
+      </Type>
+    </Attribute>
+  </Interface>
+</Definitions>
diff --git a/testing/web-platform/tests/WebIDL/valid/xml/variadic-operations.widlprocxml b/testing/web-platform/tests/WebIDL/valid/xml/variadic-operations.widlprocxml
new file mode 100644
index 000000000..0bc9f7844
--- /dev/null
+++ b/testing/web-platform/tests/WebIDL/valid/xml/variadic-operations.widlprocxml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE Definitions SYSTEM "widlprocxml.dtd">
+<Definitions>
+  <webidl>interface IntegerSet {
+  readonly attribute unsigned long cardinality;
+
+  void union(long... ints);
+  void intersection(long... ints);
+};</webidl>
+  <Interface name="IntegerSet" id="::IntegerSet">
+    <webidl>interface IntegerSet {
+  readonly attribute unsigned long cardinality;
+
+  void union(long... ints);
+  void intersection(long... ints);
+};</webidl>
+    <Attribute readonly="readonly" name="cardinality" id="::IntegerSet::cardinality">
+      <webidl>  readonly attribute unsigned long cardinality;</webidl>
+      <Type type="unsigned long"/>
+    </Attribute>
+    <Operation name="union" id="::IntegerSet::union">
+      <webidl>  void union(long... ints);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument ellipsis="ellipsis" name="ints">
+          <Type type="long"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+    <Operation name="intersection" id="::IntegerSet::intersection">
+      <webidl>  void intersection(long... ints);</webidl>
+      <Type type="void"/>
+      <ArgumentList>
+        <Argument ellipsis="ellipsis" name="ints">
+          <Type type="long"/>
+        </Argument>
+      </ArgumentList>
+    </Operation>
+  </Interface>
+</Definitions>