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

chrome/browser/bookmarks/bookmark_extension_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.
 
 #ifndef CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXTENSION_API_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXTENSION_API_H_
 
 #include <list>
 #include <string>
 #include <vector>
@@ skipping 42 matching lines @@
                                           const BookmarkNode* node) OVERRIDE;
   virtual void BookmarkNodeChildrenReordered(BookmarkModel* model,
                                              const BookmarkNode* node) OVERRIDE;
   virtual void ExtensiveBookmarkChangesBeginning(BookmarkModel* model) OVERRIDE;
   virtual void ExtensiveBookmarkChangesEnded(BookmarkModel* model) OVERRIDE;
 
  private:
   // Helper to actually dispatch an event to extension listeners.
   void DispatchEvent(Profile* profile,
                      const char* event_name,
-                     const std::string& json_args);
+                     scoped_ptr<base::ListValue> event_args);
 
   BookmarkModel* model_;
 
   DISALLOW_COPY_AND_ASSIGN(BookmarkExtensionEventRouter);
 };
 
 class BookmarksFunction : public AsyncExtensionFunction,
                           public content::NotificationObserver {
  public:
   // AsyncExtensionFunction:
@@ skipping 214 matching lines @@
       OVERRIDE;
 
  private:
   virtual ~ExportBookmarksFunction() {}
 
   // ExtensionFunction:
   virtual bool RunImpl() OVERRIDE;
 };
 
 #endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_EXTENSION_API_H_