[v8 gc] Introduce a base class for all objects that can have pending activity

third_party/WebKit/Source/core/css/FontFace.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 120 matching lines @@
         && fontFace->setPropertyFromStyle(properties, CSSPropertyFontDisplay)
         && !fontFace->family().isEmpty()
         && fontFace->traits().bitfield()) {
         fontFace->initCSSFontFace(document, src);
         return fontFace.release();
     }
     return nullptr;
 }
 
 FontFace::FontFace(ExecutionContext* context)
-    : ActiveDOMObject(context)
+    : ActiveScriptWrappable(this)
+    , ActiveDOMObject(context)
     , m_status(Unloaded)
 {
     suspendIfNeeded();
 }
 
 FontFace::FontFace(ExecutionContext* context, const AtomicString& family, const FontFaceDescriptors& descriptors)
-    : ActiveDOMObject(context)
+    : ActiveScriptWrappable(this)
+    , ActiveDOMObject(context)
     , m_family(family)
     , m_status(Unloaded)
 {
     Document* document = toDocument(context);
     setPropertyFromString(document, descriptors.style(), CSSPropertyFontStyle);
     setPropertyFromString(document, descriptors.weight(), CSSPropertyFontWeight);
     setPropertyFromString(document, descriptors.stretch(), CSSPropertyFontStretch);
     setPropertyFromString(document, descriptors.unicodeRange(), CSSPropertyUnicodeRange);
     setPropertyFromString(document, descriptors.variant(), CSSPropertyFontVariant);
     setPropertyFromString(document, descriptors.featureSettings(), CSSPropertyFontFeatureSettings);
@@ skipping 484 matching lines @@
 {
     return m_cssFontFace->hadBlankText();
 }
 
 bool FontFace::hasPendingActivity() const
 {
     return m_status == Loading && getExecutionContext() && !getExecutionContext()->activeDOMObjectsAreStopped();
 }
 
 } // namespace blink