Convert tabs, windows, and extension APIs to feature system.

chrome/renderer/extensions/extension_dispatcher.h

Index: chrome/renderer/extensions/extension_dispatcher.h
diff --git a/chrome/renderer/extensions/extension_dispatcher.h b/chrome/renderer/extensions/extension_dispatcher.h
index 0b0eb2530bb64342809e50d43eb0ddfbbdb860d0..86ffb9b57708bc437ef7061b67fc9fa59097888c 100644
--- a/chrome/renderer/extensions/extension_dispatcher.h
+++ b/chrome/renderer/extensions/extension_dispatcher.h
@@ -108,12 +108,6 @@ class ExtensionDispatcher : public content::RenderProcessObserver {
                            const std::string& response,
                            const std::string& error);
 
-  // Checks that the current context contains an extension that has permission
-  // to execute the specified function. If it does not, a v8 exception is thrown
-  // and the method returns false. Otherwise returns true.
-  bool CheckCurrentContextAccessToExtensionAPI(
-      const std::string& function_name) const;
-
  private:
   friend class RenderViewTest;
   typedef void (*BindingInstaller)(ModuleSystem* module_system,