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

Source/WebCore/page/DOMWindow.idl

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 374 matching lines @@
 //        attribute DOMErrorConstructor DOMError;
 //        attribute DOMErrorHandlerConstructor DOMErrorHandler
 //        attribute DOMLocatorConstructor DOMLocator;
 //        attribute DOMConfigurationConstructor DOMConfiguration;
     attribute CDATASectionConstructor CDATASection;
     attribute DocumentTypeConstructor DocumentType;
     attribute NotationConstructor Notation;
     attribute EntityConstructor Entity;
     attribute EntityReferenceConstructor EntityReference;
     attribute ProcessingInstructionConstructor ProcessingInstruction;
-    [Conditional=SHADOW_DOM, V8EnabledAtRuntime=shadowDOM] attribute ShadowRootConstructor WebKitShadowRoot;
-    [Conditional=SHADOW_DOM, V8EnabledAtRuntime=shadowDOM] attribute HTMLContentElementConstructor HTMLContentElement;
-    [Conditional=SHADOW_DOM, V8EnabledAtRuntime=shadowDOM] attribute HTMLShadowElementConstructor HTMLShadowElement;
+    [Conditional=SHADOW_DOM, V8EnabledPerContext=shadowDOM] attribute ShadowRootConstructor WebKitShadowRoot;
+    [Conditional=SHADOW_DOM, V8EnabledPerContext=shadowDOM] attribute HTMLContentElementConstructor HTMLContentElement;
+    [Conditional=SHADOW_DOM, V8EnabledPerContext=shadowDOM] attribute HTMLShadowElementConstructor HTMLShadowElement;
 
     attribute DOMSelectionConstructor Selection;
     attribute DOMWindowConstructor Window;
 
     attribute HTMLDocumentConstructor HTMLDocument;
     attribute HTMLElementConstructor HTMLElement;
     attribute HTMLAnchorElementConstructor HTMLAnchorElement;
     attribute HTMLAppletElementConstructor HTMLAppletElement;
     attribute HTMLAreaElementConstructor HTMLAreaElement;
     attribute HTMLBRElementConstructor HTMLBRElement;
@@ skipping 383 matching lines @@
     [Conditional=MEDIA_SOURCE, V8EnabledAtRuntime=mediaSource] attribute SourceBufferListConstructor WebKitSourceBufferList;
 
 #endif // defined(LANGUAGE_JAVASCRIPT)
 
 #if defined(V8_BINDING) && V8_BINDING
     // window.toString() requires special handling in V8
     [V8DoNotCheckSignature, DoNotCheckSecurity, Custom, NotEnumerable] DOMString toString();
 #endif // defined(V8_BINDING)
 };