Bug 1355769 - Avoid malloc for nsHtml5ElementName when processing a non-interned element name.

Fix build - Remove no longer used ReleaseableElement

Tag UXP Issue #1344

parser/html/moz.build

@@ -72,7 +72,6 @@ UNIFIED_SOURCES += [
     'nsHtml5PlainTextUtils.cpp',
     'nsHtml5Portability.cpp',
     'nsHtml5ReleasableAttributeName.cpp',
-    'nsHtml5ReleasableElementName.cpp',
     'nsHtml5Speculation.cpp',
     'nsHtml5SpeculativeLoad.cpp',
     'nsHtml5StackNode.cpp',

parser/html/nsHtml5ReleasableElementName.cpp

@@ -1,30 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "nsHtml5ReleasableElementName.h"
-
-nsHtml5ReleasableElementName::nsHtml5ReleasableElementName(nsIAtom* name)
-  : nsHtml5ElementName(name)
-{
-}
-
-void
-nsHtml5ReleasableElementName::release()
-{
-  delete this;
-}
-
-nsHtml5ElementName* 
-nsHtml5ReleasableElementName::cloneElementName(nsHtml5AtomTable* aInterner)
-{
-  nsIAtom* l = name;
-  if (aInterner) {
-    if (!l->IsStaticAtom()) {
-      nsAutoString str;
-      l->ToString(str);
-      l = aInterner->GetAtom(str);
-    }
-  }
-  return new nsHtml5ReleasableElementName(l);
-}

parser/html/nsHtml5ReleasableElementName.h

@@ -1,19 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef nsHtml5ReleasableElementName_h
-#define nsHtml5ReleasableElementName_h
-
-#include "nsHtml5ElementName.h"
-#include "mozilla/Attributes.h"
-
-class nsHtml5ReleasableElementName final : public nsHtml5ElementName
-{
-  public:
-    explicit nsHtml5ReleasableElementName(nsIAtom* name);
-    virtual void release();
-    virtual nsHtml5ElementName* cloneElementName(nsHtml5AtomTable* interner);
-};
-
-#endif // nsHtml5ReleasableElementName_h