Move Extension into extensions namespace

chrome/browser/extensions/extension_sync_bundle.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_EXTENSIONS_EXTENSION_SYNC_BUNDLE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SYNC_BUNDLE_H_
 #pragma once
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/extension_sync_data.h"
 #include "chrome/browser/sync/api/syncable_service.h"
 
 class SyncChangeProcessor;
-class Extension;
 class ExtensionService;
 class ExtensionSet;
 class SyncErrorFactory;
 
 namespace extensions {
 
+class Extension;
+
 // Bundle of extension specific sync stuff.
 class ExtensionSyncBundle {
  public:
   explicit ExtensionSyncBundle(ExtensionService* extension_service);
   ~ExtensionSyncBundle();
 
   // Setup this bundle to be sync extension data.
   void SetupSync(SyncChangeProcessor* sync_processor,
                  SyncErrorFactory* sync_error_factory,
                  const SyncDataList& initial_sync_data);
@@ skipping 58 matching lines @@
 
   std::set<std::string> synced_extensions_;
   std::map<std::string, ExtensionSyncData> pending_sync_data_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionSyncBundle);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SYNC_BUNDLE_H_