Implement a module system for the extension bindings JS.

chrome/renderer/extensions/schema_generated_bindings.h

Index: chrome/renderer/extensions/schema_generated_bindings.h
diff --git a/chrome/renderer/extensions/schema_generated_bindings.h b/chrome/renderer/extensions/schema_generated_bindings.h
index fa42fa5305deeceb00171d650ec3e334533e3723..e50ed968b493d40f191c8b8bce4a4bb9890de380 100644
--- a/chrome/renderer/extensions/schema_generated_bindings.h
+++ b/chrome/renderer/extensions/schema_generated_bindings.h
@@ -10,6 +10,7 @@
 
 class ExtensionDispatcher;
 class ChromeV8ContextSet;
+class ChromeV8Extension;
 
 namespace v8 {
 class Extension;
@@ -21,7 +22,7 @@ namespace extensions {
 // declarations in chrome/common/extensions/api/.
 class SchemaGeneratedBindings {
  public:
-  static v8::Extension* Get(ExtensionDispatcher* extension_dispatcher);
+  static ChromeV8Extension* Get(ExtensionDispatcher* extension_dispatcher);
 
   // Handles a response to an API request.  Sets |extension_id|.
   static void HandleResponse(const ChromeV8ContextSet& contexts,