4 files changed, 6 insertions, 6 deletions
diff --git a/dom/base/WindowNamedPropertiesHandler.h b/dom/base/WindowNamedPropertiesHandler.h
index 227d8c946..cafeadb85 100644
--- a/dom/base/WindowNamedPropertiesHandler.h
+++ b/dom/base/WindowNamedPropertiesHandler.h
@@ -15,7 +15,7 @@ namespace dom {
 class WindowNamedPropertiesHandler : public BaseDOMProxyHandler
 {
 public:
-  constexpr WindowNamedPropertiesHandler()
+  WindowNamedPropertiesHandler()
     : BaseDOMProxyHandler(nullptr, /* hasPrototype = */ true)
   {
   }
diff --git a/dom/base/nsAttrValue.h b/dom/base/nsAttrValue.h
index 23f61a614..33ee91afd 100644
--- a/dom/base/nsAttrValue.h
+++ b/dom/base/nsAttrValue.h
@@ -268,7 +268,7 @@ public:
     // EnumTable can be initialized either with an int16_t value
     // or a value of an enumeration type that can fit within an int16_t.
 
-    constexpr EnumTable(const char* aTag, int16_t aValue)
+    EnumTable(const char* aTag, int16_t aValue)
       : tag(aTag)
       , value(aValue)
     {
@@ -276,7 +276,7 @@ public:
 
     template<typename T,
              typename = typename std::enable_if<std::is_enum<T>::value>::type>
-    constexpr EnumTable(const char* aTag, T aValue)
+    EnumTable(const char* aTag, T aValue)
       : tag(aTag)
       , value(static_cast<int16_t>(aValue))
     {
diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index d696d826b..1c098897b 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -956,7 +956,7 @@ NS_IMPL_CYCLE_COLLECTING_RELEASE(DialogValueHolder)
 class nsOuterWindowProxy : public js::Wrapper
 {
 public:
-  constexpr nsOuterWindowProxy() : js::Wrapper(0) { }
+  nsOuterWindowProxy() : js::Wrapper(0) { }
 
   virtual bool finalizeInBackground(const JS::Value& priv) const override {
     return false;
@@ -1407,7 +1407,7 @@ nsOuterWindowProxy::singleton;
 class nsChromeOuterWindowProxy : public nsOuterWindowProxy
 {
 public:
-  constexpr nsChromeOuterWindowProxy() : nsOuterWindowProxy() { }
+  nsChromeOuterWindowProxy() : nsOuterWindowProxy() { }
 
   virtual const char *className(JSContext *cx, JS::Handle<JSObject*> wrapper) const override;
 
diff --git a/dom/base/nsJSEnvironment.cpp b/dom/base/nsJSEnvironment.cpp
index 605b1917f..0411bee80 100644
--- a/dom/base/nsJSEnvironment.cpp
+++ b/dom/base/nsJSEnvironment.cpp
@@ -1161,7 +1161,7 @@ TimeUntilNow(TimeStamp start)
 
 struct CycleCollectorStats
 {
-  constexpr CycleCollectorStats() :
+  CycleCollectorStats() :
     mMaxGCDuration(0), mRanSyncForgetSkippable(false), mSuspected(0),
     mMaxSkippableDuration(0), mMaxSliceTime(0), mMaxSliceTimeSinceClear(0),
     mTotalSliceTime(0), mAnyLockedOut(false), mExtraForgetSkippableCalls(0),