Implement a module system for the extension bindings JS.

chrome/renderer/extensions/extension_custom_bindings.h

Index: chrome/renderer/extensions/extension_custom_bindings.h
diff --git a/chrome/renderer/extensions/extension_custom_bindings.h b/chrome/renderer/extensions/extension_custom_bindings.h
index d8ac77cb441417c6b8abd2b946cb541bd206cfb1..59cf77a636198abd157585d15acb8e87768ca80a 100644
--- a/chrome/renderer/extensions/extension_custom_bindings.h
+++ b/chrome/renderer/extensions/extension_custom_bindings.h
@@ -15,13 +15,7 @@ namespace extensions {
 // Implements custom bindings for the extension API.
 class ExtensionCustomBindings : public ChromeV8Extension {
  public:
-  ExtensionCustomBindings(
-      int dependency_count,
-      const char** dependencies,
-      ExtensionDispatcher* extension_dispatcher);
-
-  virtual v8::Handle<v8::FunctionTemplate> GetNativeFunction(
-      v8::Handle<v8::String> name) OVERRIDE;
+  explicit ExtensionCustomBindings(ExtensionDispatcher* extension_dispatcher);
 
  private:
   static v8::Handle<v8::Value> GetExtensionViews(const v8::Arguments& args);