Refactor extension event distribution to use Values instead of JSON strings.

chrome/browser/extensions/api/cookies/cookies_api.h

 // Copyright (c) 2012 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.
 
 // Defines the Chrome Extensions Cookies API functions for accessing internet
 // cookies, as specified in the extension API JSON.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_API_COOKIES_COOKIES_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_COOKIES_COOKIES_API_H_
 
@@ skipping 37 matching lines @@
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Handler for the COOKIE_CHANGED event. The method takes the details of such
   // an event and constructs a suitable JSON formatted extension event from it.
   void CookieChanged(Profile* profile,
                      ChromeCookieDetails* details);
 
   // This method dispatches events to the extension message service.
   void DispatchEvent(Profile* context,
                      const char* event_name,
-                     const std::string& json_args,
+                     scoped_ptr<base::ListValue> event_args,
                      GURL& cookie_domain);
 
   // Used for tracking registrations to CookieMonster notifications.
   content::NotificationRegistrar registrar_;
 
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionCookiesEventRouter);
 };
 
@@ skipping 125 matching lines @@
 
   // ExtensionFunction:
   // GetAllCookieStoresFunction is sync.
   virtual void Run() OVERRIDE;
   virtual bool RunImpl() OVERRIDE;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_COOKIES_COOKIES_API_H_