Bug 1355479 - Flatten attribute storage in the HTML parser to AutoTArray to avoid malloc.

HTML Regen.

Tag UXP Issue #1344

18 files changed, 66 insertions, 71 deletions

diff --git a/parser/html/nsHtml5AtomList.h b/parser/html/nsHtml5AtomList.h
index 76c3ba636..1a47273eb 100644
--- a/parser/html/nsHtml5AtomList.h
+++ b/parser/html/nsHtml5AtomList.h
@@ -48,6 +48,9 @@ HTML5_ATOM(address, "address")
 HTML5_ATOM(div, "div")
 HTML5_ATOM(a, "a")
 HTML5_ATOM(nobr, "nobr")
+HTML5_ATOM(name, "name")
+HTML5_ATOM(prompt, "prompt")
+HTML5_ATOM(action, "action")
 HTML5_ATOM(input, "input")
 HTML5_ATOM(option, "option")
 HTML5_ATOM(ruby, "ruby")
@@ -249,7 +252,6 @@ HTML5_ATOM(linebreak, "linebreak")
 HTML5_ATOM(label, "label")
 HTML5_ATOM(linethickness, "linethickness")
 HTML5_ATOM(mode, "mode")
-HTML5_ATOM(name, "name")
 HTML5_ATOM(noresize, "noresize")
 HTML5_ATOM(onbeforeunload, "onbeforeunload")
 HTML5_ATOM(onrepeat, "onrepeat")
@@ -355,7 +357,6 @@ HTML5_ATOM(pathLength, "pathLength")
 HTML5_ATOM(path, "path")
 HTML5_ATOM(altimg, "altimg")
 HTML5_ATOM(actiontype, "actiontype")
-HTML5_ATOM(action, "action")
 HTML5_ATOM(active, "active")
 HTML5_ATOM(additive, "additive")
 HTML5_ATOM(begin, "begin")
@@ -423,7 +424,6 @@ HTML5_ATOM(frameborder, "frameborder")
 HTML5_ATOM(frame, "frame")
 HTML5_ATOM(framespacing, "framespacing")
 HTML5_ATOM(from, "from")
-HTML5_ATOM(prompt, "prompt")
 HTML5_ATOM(primitiveunits, "primitiveunits")
 HTML5_ATOM(primitiveUnits, "primitiveUnits")
 HTML5_ATOM(symmetric, "symmetric")
@@ -713,6 +713,7 @@ HTML5_ATOM(verythinmathspace, "verythinmathspace")
 HTML5_ATOM(verythickmathspace, "verythickmathspace")
 HTML5_ATOM(veryverythinmathspace, "veryverythinmathspace")
 HTML5_ATOM(veryverythickmathspace, "veryverythickmathspace")
+HTML5_ATOM(isindex, "isindex")
 HTML5_ATOM(and_, "and")
 HTML5_ATOM(arg, "arg")
 HTML5_ATOM(abs, "abs")
@@ -1066,7 +1067,6 @@ HTML5_ATOM(fecolormatrix, "fecolormatrix")
 HTML5_ATOM(feColorMatrix, "feColorMatrix")
 HTML5_ATOM(feconvolvematrix, "feconvolvematrix")
 HTML5_ATOM(feConvolveMatrix, "feConvolveMatrix")
-HTML5_ATOM(isindex, "isindex")
 HTML5_ATOM(matrix, "matrix")
 HTML5_ATOM(apply, "apply")
 HTML5_ATOM(femorphology, "femorphology")
diff --git a/parser/html/nsHtml5AttributeName.cpp b/parser/html/nsHtml5AttributeName.cpp
index c527767ec..1947972b8 100644
--- a/parser/html/nsHtml5AttributeName.cpp
+++ b/parser/html/nsHtml5AttributeName.cpp
@@ -48,14 +48,12 @@
 #include "nsHtml5TreeBuilder.h"
 #include "nsHtml5MetaScanner.h"
 #include "nsHtml5ElementName.h"
-#include "nsHtml5HtmlAttributes.h"
 #include "nsHtml5StackNode.h"
 #include "nsHtml5UTF16Buffer.h"
 #include "nsHtml5StateSnapshot.h"
 #include "nsHtml5Portability.h"
 
 #include "nsHtml5AttributeName.h"
-#include "nsHtml5ReleasableAttributeName.h"
 
 int32_t* nsHtml5AttributeName::ALL_NO_NS = 0;
 int32_t* nsHtml5AttributeName::XMLNS_NS = 0;
@@ -111,35 +109,55 @@ nsHtml5AttributeName::nameByBuffer(char16_t* buf, int32_t offset, int32_t length
   uint32_t hash = nsHtml5AttributeName::bufToHash(buf, length);
   int32_t index = nsHtml5AttributeName::ATTRIBUTE_HASHES.binarySearch(hash);
   if (index < 0) {
-    return nsHtml5AttributeName::createAttributeName(nsHtml5Portability::newLocalNameFromBuffer(buf, offset, length, interner));
-  } else {
-    nsHtml5AttributeName* attributeName = nsHtml5AttributeName::ATTRIBUTE_NAMES[index];
-    nsIAtom* name = attributeName->getLocal(NS_HTML5ATTRIBUTE_NAME_HTML);
-    if (!nsHtml5Portability::localEqualsBuffer(name, buf, offset, length)) {
-      return nsHtml5AttributeName::createAttributeName(nsHtml5Portability::newLocalNameFromBuffer(buf, offset, length, interner));
-    }
-    return attributeName;
+    return nullptr;
   }
+  nsHtml5AttributeName* attributeName = nsHtml5AttributeName::ATTRIBUTE_NAMES[index];
+  nsIAtom* name = attributeName->getLocal(NS_HTML5ATTRIBUTE_NAME_HTML);
+  if (!nsHtml5Portability::localEqualsBuffer(name, buf, offset, length)) {
+    return nullptr;
+  }
+  return attributeName;
 }
 
 
 nsHtml5AttributeName::nsHtml5AttributeName(int32_t* uri, nsIAtom** local, nsIAtom** prefix)
   : uri(uri),
     local(local),
-    prefix(prefix)
+    prefix(prefix),
+    custom(false)
 {
   MOZ_COUNT_CTOR(nsHtml5AttributeName);
 }
 
-nsHtml5AttributeName* 
-nsHtml5AttributeName::createAttributeName(nsIAtom* name)
+
+nsHtml5AttributeName::nsHtml5AttributeName()
+  : uri(nsHtml5AttributeName::ALL_NO_NS),
+    local(nsHtml5AttributeName::SAME_LOCAL(nullptr)),
+    prefix(ALL_NO_PREFIX),
+    custom(true)
+{
+  MOZ_COUNT_CTOR(nsHtml5AttributeName);
+}
+
+bool 
+nsHtml5AttributeName::isInterned()
 {
-  return new nsHtml5ReleasableAttributeName(nsHtml5AttributeName::ALL_NO_NS, nsHtml5AttributeName::SAME_LOCAL(name), ALL_NO_PREFIX);
+  return !custom;
 }
 
 void 
-nsHtml5AttributeName::release()
+nsHtml5AttributeName::setNameForNonInterned(nsIAtom* name)
 {
+  MOZ_ASSERT(custom);
+  local[0] = name;
+  local[1] = name;
+  local[2] = name;
+}
+
+nsHtml5AttributeName* 
+nsHtml5AttributeName::createAttributeName(nsIAtom* name)
+{
+  return new nsHtml5AttributeName(nsHtml5AttributeName::ALL_NO_NS, nsHtml5AttributeName::SAME_LOCAL(name), ALL_NO_PREFIX);
 }
 
 
@@ -149,12 +167,6 @@ nsHtml5AttributeName::~nsHtml5AttributeName()
   delete[] local;
 }
 
-nsHtml5AttributeName* 
-nsHtml5AttributeName::cloneAttributeName(nsHtml5AtomTable* interner)
-{
-  return this;
-}
-
 int32_t 
 nsHtml5AttributeName::getUri(int32_t mode)
 {
diff --git a/parser/html/nsHtml5AttributeName.h b/parser/html/nsHtml5AttributeName.h
index f71a5d87b..8519f463f 100644
--- a/parser/html/nsHtml5AttributeName.h
+++ b/parser/html/nsHtml5AttributeName.h
@@ -51,7 +51,6 @@ class nsHtml5Tokenizer;
 class nsHtml5TreeBuilder;
 class nsHtml5MetaScanner;
 class nsHtml5ElementName;
-class nsHtml5HtmlAttributes;
 class nsHtml5UTF16Buffer;
 class nsHtml5StateSnapshot;
 class nsHtml5Portability;
@@ -114,14 +113,14 @@ class nsHtml5AttributeName
     int32_t* uri;
     nsIAtom** local;
     nsIAtom** prefix;
-  protected:
+    bool custom;
     nsHtml5AttributeName(int32_t* uri, nsIAtom** local, nsIAtom** prefix);
-  private:
-    static nsHtml5AttributeName* createAttributeName(nsIAtom* name);
   public:
-    virtual void release();
-    virtual ~nsHtml5AttributeName();
-    virtual nsHtml5AttributeName* cloneAttributeName(nsHtml5AtomTable* interner);
+    nsHtml5AttributeName();
+    bool isInterned();
+    void setNameForNonInterned(nsIAtom* name);
+    static nsHtml5AttributeName* createAttributeName(nsIAtom* name);
+    ~nsHtml5AttributeName();
     int32_t getUri(int32_t mode);
     nsIAtom* getLocal(int32_t mode);
     nsIAtom* getPrefix(int32_t mode);
diff --git a/parser/html/nsHtml5ElementName.cpp b/parser/html/nsHtml5ElementName.cpp
index 6b829dfe3..cc5a73098 100644
--- a/parser/html/nsHtml5ElementName.cpp
+++ b/parser/html/nsHtml5ElementName.cpp
@@ -48,7 +48,6 @@
 #include "nsHtml5TreeBuilder.h"
 #include "nsHtml5MetaScanner.h"
 #include "nsHtml5AttributeName.h"
-#include "nsHtml5HtmlAttributes.h"
 #include "nsHtml5StackNode.h"
 #include "nsHtml5UTF16Buffer.h"
 #include "nsHtml5StateSnapshot.h"
@@ -117,6 +116,7 @@ nsHtml5ElementName::setNameForNonInterned(nsIAtom* name)
   MOZ_ASSERT(this->flags == (NS_HTML5TREE_BUILDER_OTHER | NS_HTML5ELEMENT_NAME_NOT_INTERNED));
 }
 
+nsHtml5ElementName* nsHtml5ElementName::ELT_ISINDEX = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_AND = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_ARG = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_ABS = nullptr;
@@ -505,7 +505,6 @@ nsHtml5ElementName* nsHtml5ElementName::ELT_VIEW = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_APPROX = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_FECOLORMATRIX = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_FECONVOLVEMATRIX = nullptr;
-nsHtml5ElementName* nsHtml5ElementName::ELT_ISINDEX = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_MATRIX = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_APPLY = nullptr;
 nsHtml5ElementName* nsHtml5ElementName::ELT_BODY = nullptr;
@@ -521,6 +520,7 @@ staticJArray<int32_t,int32_t> nsHtml5ElementName::ELEMENT_HASHES = { ELEMENT_HAS
 void
 nsHtml5ElementName::initializeStatics()
 {
+  ELT_ISINDEX = new nsHtml5ElementName(nsHtml5Atoms::isindex, nsHtml5Atoms::isindex, NS_HTML5TREE_BUILDER_ISINDEX | NS_HTML5ELEMENT_NAME_SPECIAL);
   ELT_AND = new nsHtml5ElementName(nsHtml5Atoms::and_, nsHtml5Atoms::and_, NS_HTML5TREE_BUILDER_OTHER);
   ELT_ARG = new nsHtml5ElementName(nsHtml5Atoms::arg, nsHtml5Atoms::arg, NS_HTML5TREE_BUILDER_OTHER);
   ELT_ABS = new nsHtml5ElementName(nsHtml5Atoms::abs, nsHtml5Atoms::abs, NS_HTML5TREE_BUILDER_OTHER);
@@ -909,7 +909,6 @@ nsHtml5ElementName::initializeStatics()
   ELT_APPROX = new nsHtml5ElementName(nsHtml5Atoms::approx, nsHtml5Atoms::approx, NS_HTML5TREE_BUILDER_OTHER);
   ELT_FECOLORMATRIX = new nsHtml5ElementName(nsHtml5Atoms::fecolormatrix, nsHtml5Atoms::feColorMatrix, NS_HTML5TREE_BUILDER_OTHER);
   ELT_FECONVOLVEMATRIX = new nsHtml5ElementName(nsHtml5Atoms::feconvolvematrix, nsHtml5Atoms::feConvolveMatrix, NS_HTML5TREE_BUILDER_OTHER);
-  ELT_ISINDEX = new nsHtml5ElementName(nsHtml5Atoms::isindex, nsHtml5Atoms::isindex, NS_HTML5TREE_BUILDER_ISINDEX | NS_HTML5ELEMENT_NAME_SPECIAL);
   ELT_MATRIX = new nsHtml5ElementName(nsHtml5Atoms::matrix, nsHtml5Atoms::matrix, NS_HTML5TREE_BUILDER_OTHER);
   ELT_APPLY = new nsHtml5ElementName(nsHtml5Atoms::apply, nsHtml5Atoms::apply, NS_HTML5TREE_BUILDER_OTHER);
   ELT_BODY = new nsHtml5ElementName(nsHtml5Atoms::body, nsHtml5Atoms::body, NS_HTML5TREE_BUILDER_BODY | NS_HTML5ELEMENT_NAME_SPECIAL | NS_HTML5ELEMENT_NAME_OPTIONAL_END_TAG);
@@ -1323,6 +1322,7 @@ nsHtml5ElementName::initializeStatics()
 void
 nsHtml5ElementName::releaseStatics()
 {
+  delete ELT_ISINDEX;
   delete ELT_AND;
   delete ELT_ARG;
   delete ELT_ABS;
@@ -1711,7 +1711,6 @@ nsHtml5ElementName::releaseStatics()
   delete ELT_APPROX;
   delete ELT_FECOLORMATRIX;
   delete ELT_FECONVOLVEMATRIX;
-  delete ELT_ISINDEX;
   delete ELT_MATRIX;
   delete ELT_APPLY;
   delete ELT_BODY;
diff --git a/parser/html/nsHtml5ElementName.h b/parser/html/nsHtml5ElementName.h
index 50415225a..57e80679d 100644
--- a/parser/html/nsHtml5ElementName.h
+++ b/parser/html/nsHtml5ElementName.h
@@ -51,7 +51,6 @@ class nsHtml5Tokenizer;
 class nsHtml5TreeBuilder;
 class nsHtml5MetaScanner;
 class nsHtml5AttributeName;
-class nsHtml5HtmlAttributes;
 class nsHtml5UTF16Buffer;
 class nsHtml5StateSnapshot;
 class nsHtml5Portability;
@@ -118,6 +117,7 @@ class nsHtml5ElementName
     nsHtml5ElementName();
     ~nsHtml5ElementName();
     void setNameForNonInterned(nsIAtom* name);
+    static nsHtml5ElementName* ELT_ISINDEX;
     static nsHtml5ElementName* ELT_AND;
     static nsHtml5ElementName* ELT_ARG;
     static nsHtml5ElementName* ELT_ABS;
@@ -506,7 +506,6 @@ class nsHtml5ElementName
     static nsHtml5ElementName* ELT_APPROX;
     static nsHtml5ElementName* ELT_FECOLORMATRIX;
     static nsHtml5ElementName* ELT_FECONVOLVEMATRIX;
-    static nsHtml5ElementName* ELT_ISINDEX;
     static nsHtml5ElementName* ELT_MATRIX;
     static nsHtml5ElementName* ELT_APPLY;
     static nsHtml5ElementName* ELT_BODY;
diff --git a/parser/html/nsHtml5MetaScanner.cpp b/parser/html/nsHtml5MetaScanner.cpp
index f22b77f0d..e24b5d353 100644
--- a/parser/html/nsHtml5MetaScanner.cpp
+++ b/parser/html/nsHtml5MetaScanner.cpp
@@ -49,7 +49,6 @@
 #include "nsHtml5TreeBuilder.h"
 #include "nsHtml5AttributeName.h"
 #include "nsHtml5ElementName.h"
-#include "nsHtml5HtmlAttributes.h"
 #include "nsHtml5StackNode.h"
 #include "nsHtml5UTF16Buffer.h"
 #include "nsHtml5StateSnapshot.h"
diff --git a/parser/html/nsHtml5MetaScanner.h b/parser/html/nsHtml5MetaScanner.h
index 7fb950d2c..9d3a50a85 100644
--- a/parser/html/nsHtml5MetaScanner.h
+++ b/parser/html/nsHtml5MetaScanner.h
@@ -52,7 +52,6 @@ class nsHtml5Tokenizer;
 class nsHtml5TreeBuilder;
 class nsHtml5AttributeName;
 class nsHtml5ElementName;
-class nsHtml5HtmlAttributes;
 class nsHtml5UTF16Buffer;
 class nsHtml5StateSnapshot;
 class nsHtml5Portability;
diff --git a/parser/html/nsHtml5Portability.h b/parser/html/nsHtml5Portability.h
index ce9401664..8e384258b 100644
--- a/parser/html/nsHtml5Portability.h
+++ b/parser/html/nsHtml5Portability.h
@@ -52,7 +52,6 @@ class nsHtml5TreeBuilder;
 class nsHtml5MetaScanner;
 class nsHtml5AttributeName;
 class nsHtml5ElementName;
-class nsHtml5HtmlAttributes;
 class nsHtml5UTF16Buffer;
 class nsHtml5StateSnapshot;
 
diff --git a/parser/html/nsHtml5StackNode.cpp b/parser/html/nsHtml5StackNode.cpp
index 10b0192c0..95e51fa1a 100644
--- a/parser/html/nsHtml5StackNode.cpp
+++ b/parser/html/nsHtml5StackNode.cpp
@@ -50,7 +50,6 @@
 #include "nsHtml5MetaScanner.h"
 #include "nsHtml5AttributeName.h"
 #include "nsHtml5ElementName.h"
-#include "nsHtml5HtmlAttributes.h"
 #include "nsHtml5UTF16Buffer.h"
 #include "nsHtml5StateSnapshot.h"
 #include "nsHtml5Portability.h"
diff --git a/parser/html/nsHtml5StackNode.h b/parser/html/nsHtml5StackNode.h
index cfe6820c6..15922f3bb 100644
--- a/parser/html/nsHtml5StackNode.h
+++ b/parser/html/nsHtml5StackNode.h
@@ -53,7 +53,6 @@ class nsHtml5TreeBuilder;
 class nsHtml5MetaScanner;
 class nsHtml5AttributeName;
 class nsHtml5ElementName;
-class nsHtml5HtmlAttributes;
 class nsHtml5UTF16Buffer;
 class nsHtml5StateSnapshot;
 class nsHtml5Portability;
diff --git a/parser/html/nsHtml5StateSnapshot.cpp b/parser/html/nsHtml5StateSnapshot.cpp
index 33809dc70..c23963260 100644
--- a/parser/html/nsHtml5StateSnapshot.cpp
+++ b/parser/html/nsHtml5StateSnapshot.cpp
@@ -49,7 +49,6 @@
 #include "nsHtml5MetaScanner.h"
 #include "nsHtml5AttributeName.h"
 #include "nsHtml5ElementName.h"
-#include "nsHtml5HtmlAttributes.h"
 #include "nsHtml5StackNode.h"
 #include "nsHtml5UTF16Buffer.h"
 #include "nsHtml5Portability.h"
diff --git a/parser/html/nsHtml5StateSnapshot.h b/parser/html/nsHtml5StateSnapshot.h
index 7d60b88c8..b820af980 100644
--- a/parser/html/nsHtml5StateSnapshot.h
+++ b/parser/html/nsHtml5StateSnapshot.h
@@ -52,7 +52,6 @@ class nsHtml5TreeBuilder;
 class nsHtml5MetaScanner;
 class nsHtml5AttributeName;
 class nsHtml5ElementName;
-class nsHtml5HtmlAttributes;
 class nsHtml5UTF16Buffer;
 class nsHtml5Portability;
 
diff --git a/parser/html/nsHtml5Tokenizer.cpp b/parser/html/nsHtml5Tokenizer.cpp
index aa5b3df28..3b1c34b58 100644
--- a/parser/html/nsHtml5Tokenizer.cpp
+++ b/parser/html/nsHtml5Tokenizer.cpp
@@ -52,7 +52,6 @@
 #include "nsHtml5MetaScanner.h"
 #include "nsHtml5AttributeName.h"
 #include "nsHtml5ElementName.h"
-#include "nsHtml5HtmlAttributes.h"
 #include "nsHtml5StackNode.h"
 #include "nsHtml5UTF16Buffer.h"
 #include "nsHtml5StateSnapshot.h"
@@ -99,6 +98,7 @@ nsHtml5Tokenizer::nsHtml5Tokenizer(nsHtml5TreeBuilder* tokenHandler, bool viewin
     tagName(nullptr),
     nonInternedTagName(new nsHtml5ElementName()),
     attributeName(nullptr),
+    nonInternedAttributeName(new nsHtml5AttributeName()),
     doctypeName(nullptr),
     publicIdentifier(nullptr),
     systemIdentifier(nullptr),
@@ -325,13 +325,16 @@ void
 nsHtml5Tokenizer::attributeNameComplete()
 {
   attributeName = nsHtml5AttributeName::nameByBuffer(strBuf, 0, strBufLen, interner);
+  if (!attributeName) {
+    nonInternedAttributeName->setNameForNonInterned(nsHtml5Portability::newLocalNameFromBuffer(strBuf, 0, strBufLen, interner));
+    attributeName = nonInternedAttributeName;
+  }
   clearStrBufAfterUse();
   if (!attributes) {
     attributes = new nsHtml5HtmlAttributes(0);
   }
   if (attributes->contains(attributeName)) {
     errDuplicateAttribute();
-    attributeName->release();
     attributeName = nullptr;
   }
 }
@@ -3941,10 +3944,8 @@ nsHtml5Tokenizer::end()
   }
   tagName = nullptr;
   nonInternedTagName->setNameForNonInterned(nullptr);
-  if (attributeName) {
-    attributeName->release();
-    attributeName = nullptr;
-  }
+  attributeName = nullptr;
+  nonInternedAttributeName->setNameForNonInterned(nullptr);
   tokenHandler->endTokenization();
   if (attributes) {
     attributes->clear(0);
@@ -3984,13 +3985,8 @@ nsHtml5Tokenizer::resetToDataState()
   endTag = false;
   shouldSuspend = false;
   initDoctypeFields();
-  if (tagName) {
-    tagName = nullptr;
-  }
-  if (attributeName) {
-    attributeName->release();
-    attributeName = nullptr;
-  }
+  tagName = nullptr;
+  attributeName = nullptr;
   if (newAttributesEachTime) {
     if (attributes) {
       delete attributes;
@@ -4052,13 +4048,13 @@ nsHtml5Tokenizer::loadState(nsHtml5Tokenizer* other)
     nonInternedTagName->setNameForNonInterned(nsHtml5Portability::newLocalFromLocal(other->tagName->getName(), interner));
     tagName = nonInternedTagName;
   }
-  if (attributeName) {
-    attributeName->release();
-  }
   if (!other->attributeName) {
     attributeName = nullptr;
+  } else if (other->attributeName->isInterned()) {
+    attributeName = other->attributeName;
   } else {
-    attributeName = other->attributeName->cloneAttributeName(interner);
+    nonInternedAttributeName->setNameForNonInterned(nsHtml5Portability::newLocalFromLocal(other->attributeName->getLocal(NS_HTML5ATTRIBUTE_NAME_HTML), interner));
+    attributeName = nonInternedAttributeName;
   }
   delete attributes;
   if (!other->attributes) {
@@ -4089,6 +4085,7 @@ nsHtml5Tokenizer::~nsHtml5Tokenizer()
 {
   MOZ_COUNT_DTOR(nsHtml5Tokenizer);
   delete nonInternedTagName;
+  delete nonInternedAttributeName;
   nonInternedTagName = nullptr;
   delete attributes;
   attributes = nullptr;
diff --git a/parser/html/nsHtml5Tokenizer.h b/parser/html/nsHtml5Tokenizer.h
index 121d355de..fedf06e0d 100644
--- a/parser/html/nsHtml5Tokenizer.h
+++ b/parser/html/nsHtml5Tokenizer.h
@@ -55,7 +55,6 @@ class nsHtml5TreeBuilder;
 class nsHtml5MetaScanner;
 class nsHtml5AttributeName;
 class nsHtml5ElementName;
-class nsHtml5HtmlAttributes;
 class nsHtml5UTF16Buffer;
 class nsHtml5StateSnapshot;
 class nsHtml5Portability;
@@ -128,6 +127,7 @@ class nsHtml5Tokenizer
   protected:
     nsHtml5AttributeName* attributeName;
   private:
+    nsHtml5AttributeName* nonInternedAttributeName;
     nsIAtom* doctypeName;
     nsHtml5String publicIdentifier;
     nsHtml5String systemIdentifier;
diff --git a/parser/html/nsHtml5TreeBuilder.cpp b/parser/html/nsHtml5TreeBuilder.cpp
index 23e874d96..d909c223c 100644
--- a/parser/html/nsHtml5TreeBuilder.cpp
+++ b/parser/html/nsHtml5TreeBuilder.cpp
@@ -62,7 +62,6 @@
 #include "nsHtml5MetaScanner.h"
 #include "nsHtml5AttributeName.h"
 #include "nsHtml5ElementName.h"
-#include "nsHtml5HtmlAttributes.h"
 #include "nsHtml5StackNode.h"
 #include "nsHtml5UTF16Buffer.h"
 #include "nsHtml5StateSnapshot.h"
@@ -1260,11 +1259,11 @@ nsHtml5TreeBuilder::startTag(nsHtml5ElementName* elementName, nsHtml5HtmlAttribu
               nsHtml5HtmlAttributes* inputAttributes = new nsHtml5HtmlAttributes(0);
               inputAttributes->addAttribute(nsHtml5AttributeName::ATTR_NAME, nsHtml5Portability::newStringFromLiteral("isindex"), tokenizer->getLineNumber());
               for (int32_t i = 0; i < attributes->getLength(); i++) {
-                nsHtml5AttributeName* attributeQName = attributes->getAttributeNameNoBoundsCheck(i);
-                if (nsHtml5AttributeName::ATTR_NAME == attributeQName || nsHtml5AttributeName::ATTR_PROMPT == attributeQName) {
+                nsIAtom* attributeQName = attributes->getLocalNameNoBoundsCheck(i);
+                if (nsHtml5Atoms::name == attributeQName || nsHtml5Atoms::prompt == attributeQName) {
                   attributes->releaseValue(i);
-                } else if (nsHtml5AttributeName::ATTR_ACTION != attributeQName) {
-                  inputAttributes->addAttribute(attributeQName, attributes->getValueNoBoundsCheck(i), attributes->getLineNoBoundsCheck(i));
+                } else if (nsHtml5Atoms::action != attributeQName) {
+                  inputAttributes->AddAttributeWithLocal(attributeQName, attributes->getValueNoBoundsCheck(i), attributes->getLineNoBoundsCheck(i));
                 }
               }
               attributes->clearWithoutReleasingContents();
diff --git a/parser/html/nsHtml5TreeBuilder.h b/parser/html/nsHtml5TreeBuilder.h
index ff6cdd4ae..5b314a5ce 100644
--- a/parser/html/nsHtml5TreeBuilder.h
+++ b/parser/html/nsHtml5TreeBuilder.h
@@ -65,7 +65,6 @@ class nsHtml5Tokenizer;
 class nsHtml5MetaScanner;
 class nsHtml5AttributeName;
 class nsHtml5ElementName;
-class nsHtml5HtmlAttributes;
 class nsHtml5UTF16Buffer;
 class nsHtml5StateSnapshot;
 class nsHtml5Portability;
diff --git a/parser/html/nsHtml5UTF16Buffer.cpp b/parser/html/nsHtml5UTF16Buffer.cpp
index 4ba40eab0..d2f8b9832 100644
--- a/parser/html/nsHtml5UTF16Buffer.cpp
+++ b/parser/html/nsHtml5UTF16Buffer.cpp
@@ -49,7 +49,6 @@
 #include "nsHtml5MetaScanner.h"
 #include "nsHtml5AttributeName.h"
 #include "nsHtml5ElementName.h"
-#include "nsHtml5HtmlAttributes.h"
 #include "nsHtml5StackNode.h"
 #include "nsHtml5StateSnapshot.h"
 #include "nsHtml5Portability.h"
diff --git a/parser/html/nsHtml5UTF16Buffer.h b/parser/html/nsHtml5UTF16Buffer.h
index 5413dac87..6214d6d07 100644
--- a/parser/html/nsHtml5UTF16Buffer.h
+++ b/parser/html/nsHtml5UTF16Buffer.h
@@ -52,7 +52,6 @@ class nsHtml5TreeBuilder;
 class nsHtml5MetaScanner;
 class nsHtml5AttributeName;
 class nsHtml5ElementName;
-class nsHtml5HtmlAttributes;
 class nsHtml5StateSnapshot;
 class nsHtml5Portability;