Add ref count to service workers for extension API.

extensions/browser/extension_function_dispatcher.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef EXTENSIONS_BROWSER_EXTENSION_FUNCTION_DISPATCHER_H_
 #define EXTENSIONS_BROWSER_EXTENSION_FUNCTION_DISPATCHER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 83 matching lines @@
 
   // Message handlers.
   // The response is sent to the corresponding render view in an
   // ExtensionMsg_Response message.
   void Dispatch(const ExtensionHostMsg_Request_Params& params,
                 content::RenderFrameHost* render_frame_host,
                 int render_process_id);
 
   // Called when an ExtensionFunction is done executing, after it has sent
   // a response (if any) to the extension.
-  void OnExtensionFunctionCompleted(const Extension* extension);
+  void OnExtensionFunctionCompleted(const Extension* extension,
+                                    bool is_from_service_worker);
 
   // See the Delegate class for documentation on these methods.
   // TODO(devlin): None of these belong here. We should kill
   // ExtensionFunctionDispatcher::Delegate.
   WindowController* GetExtensionWindowController() const;
   content::WebContents* GetAssociatedWebContents() const;
   content::WebContents* GetVisibleWebContents() const;
 
   // The BrowserContext that this dispatcher is associated with.
   content::BrowserContext* browser_context() { return browser_context_; }
@@ skipping 67 matching lines @@
                std::unique_ptr<UIThreadWorkerResponseCallbackWrapper>>;
   // TODO(lazyboy): The map entries are cleared upon RenderProcessHost shutown,
   // we should really be clearing it on service worker shutdown.
   UIThreadWorkerResponseCallbackWrapperMap
       ui_thread_response_callback_wrappers_for_worker_;
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_EXTENSION_FUNCTION_DISPATCHER_H_