Merge 133429 - Shadow DOM should be able to be disabled per context.

Source/WebKit/chromium/src/ContextFeaturesClientImpl.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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 122 matching lines @@
 {
     ContextFeaturesCache::from(document)->validateAgainst(document);
 }
 
 bool ContextFeaturesClientImpl::askIfIsEnabled(Document* document, ContextFeatures::FeatureType type, bool defaultValue)
 {
     if (!m_client)
         return defaultValue;
 
     switch (type) {
+    case ContextFeatures::ShadowDOM:
     case ContextFeatures::StyleScoped:
         return m_client->allowWebComponents(WebDocument(document), defaultValue);
     case ContextFeatures::HTMLNotifications:
         return m_client->allowHTMLNotifications(WebDocument(document));
     case ContextFeatures::MutationEvents:
         return m_client->allowMutationEvents(WebDocument(document), defaultValue);
     case ContextFeatures::PushState:
         return m_client->allowPushState(WebDocument(document));
     default:
         return defaultValue;
     }
 }
 
 } // namespace WebKit