Simplify Supplementables post Oilpan.

third_party/WebKit/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 47 matching lines @@
 bool ContextFeatures::mutationEventsEnabled(Document* document)
 {
     ASSERT(document);
     if (!document)
         return true;
     return document->contextFeatures().isEnabled(document, MutationEvents, true);
 }
 
 void provideContextFeaturesTo(Page& page, PassOwnPtr<ContextFeaturesClient> client)
 {
-    ContextFeatures::SupplementType::provideTo(page, ContextFeatures::supplementName(), ContextFeatures::create(client));
+    Supplement<Page>::provideTo(page, ContextFeatures::supplementName(), ContextFeatures::create(client));
 }
 
 void provideContextFeaturesToDocumentFrom(Document& document, Page& page)
 {
-    ContextFeatures* provided = static_cast<ContextFeatures*>(ContextFeatures::SupplementType::from(page, ContextFeatures::supplementName()));
+    ContextFeatures* provided = static_cast<ContextFeatures*>(Supplement<Page>::from(page, ContextFeatures::supplementName()));
     if (!provided)
         return;
     document.setContextFeatures(*provided);
 }
 
 } // namespace blink