Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/themes/theme_syncable_service.cc

 // 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.
 
 #include "chrome/browser/themes/theme_syncable_service.h"
 
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/themes/theme_service.h"
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "chrome/common/extensions/sync_helper.h"
+#include "extensions/browser/extension_system.h"
 #include "extensions/common/extension.h"
 #include "sync/protocol/sync.pb.h"
 #include "sync/protocol/theme_specifics.pb.h"
 
 using std::string;
 
 namespace {
 
 bool IsTheme(const extensions::Extension* extension) {
   return extension->is_theme();
@@ skipping 310 matching lines @@
       syncer::SyncChange(FROM_HERE, change_type,
                          syncer::SyncData::CreateLocalData(
                              kCurrentThemeClientTag, kCurrentThemeNodeTitle,
                              entity_specifics)));
 
   DVLOG(1) << "Update theme specifics from current theme: "
       << changes.back().ToString();
 
   return sync_processor_->ProcessSyncChanges(FROM_HERE, changes);
 }