Have Document::timing() / Document::contextFeatures() return a reference

Source/core/dom/ContextFeatures.cpp

 /*
  * Copyright (C) 2012 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.
  *     * Neither the name of Google Inc. nor the names of its
@@ skipping 36 matching lines @@
 ContextFeatures* ContextFeatures::defaultSwitch()
 {
     DEFINE_STATIC_REF(ContextFeatures, instance, (ContextFeatures::create(ContextFeaturesClient::empty())));
     return instance;
 }
 
 bool ContextFeatures::dialogElementEnabled(Document* document)
 {
     if (!document)
         return RuntimeEnabledFeatures::dialogElementEnabled();
-    return document->contextFeatures()->isEnabled(document, DialogElement, RuntimeEnabledFeatures::dialogElementEnabled());
+    return document->contextFeatures().isEnabled(document, DialogElement, RuntimeEnabledFeatures::dialogElementEnabled());
 }
 
 bool ContextFeatures::styleScopedEnabled(Document* document)
 {
     if (!document)
         return RuntimeEnabledFeatures::styleScopedEnabled();
-    return document->contextFeatures()->isEnabled(document, StyleScoped, RuntimeEnabledFeatures::styleScopedEnabled());
+    return document->contextFeatures().isEnabled(document, StyleScoped, RuntimeEnabledFeatures::styleScopedEnabled());
 }
 
 bool ContextFeatures::pagePopupEnabled(Document* document)
 {
     if (!document)
         return false;
-    return document->contextFeatures()->isEnabled(document, PagePopup, false);
+    return document->contextFeatures().isEnabled(document, PagePopup, false);
 }
 
 bool ContextFeatures::mutationEventsEnabled(Document* document)
 {
     ASSERT(document);
     if (!document)
         return true;
-    return document->contextFeatures()->isEnabled(document, MutationEvents, true);
+    return document->contextFeatures().isEnabled(document, MutationEvents, true);
 }
 
 bool ContextFeatures::pushStateEnabled(Document* document)
 {
-    return document->contextFeatures()->isEnabled(document, PushState, true);
+    return document->contextFeatures().isEnabled(document, PushState, true);
 }
 
 void provideContextFeaturesTo(Page& page, ContextFeaturesClient* client)
 {
     RefCountedSupplement<Page, ContextFeatures>::provideTo(page, ContextFeatures::supplementName(), ContextFeatures::create(client));
 }
 
 void provideContextFeaturesToDocumentFrom(Document& document, Page& page)
 {
     ContextFeatures* provided = static_cast<ContextFeatures*>(RefCountedSupplement<Page, ContextFeatures>::from(page, ContextFeatures::supplementName()));
     if (!provided)
         return;
-    document.setContextFeatures(provided);
+    document.setContextFeatures(*provided);
 }
 
 }