Remove extension group from DOMWrapperWorld.

third_party/WebKit/Source/core/loader/FrameLoaderClient.h

Index: third_party/WebKit/Source/core/loader/FrameLoaderClient.h
diff --git a/third_party/WebKit/Source/core/loader/FrameLoaderClient.h b/third_party/WebKit/Source/core/loader/FrameLoaderClient.h
index 5332b9d3837f05691d6c5db1e0375c84b9e4b0d9..3040bbed5a51e6fd1eacef2df4d0a16ee9123f8f 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoaderClient.h
+++ b/third_party/WebKit/Source/core/loader/FrameLoaderClient.h
@@ -218,13 +218,10 @@ class CORE_EXPORT FrameLoaderClient : public FrameClient {
   virtual void runScriptsAtDocumentReady(bool documentIsEmpty) = 0;
 
   virtual void didCreateScriptContext(v8::Local<v8::Context>,
-                                      int extensionGroup,
                                       int worldId) = 0;
   virtual void willReleaseScriptContext(v8::Local<v8::Context>,
                                         int worldId) = 0;
-  virtual bool allowScriptExtension(const String& extensionName,
-                                    int extensionGroup,
-                                    int worldId) = 0;
+  virtual bool allowScriptExtensions() = 0;
 
   virtual void didChangeScrollOffset() {}
   virtual void didUpdateCurrentHistoryItem() {}