Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/profile_resetter/profile_resetter.cc

 // Copyright (c) 2013 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/profile_resetter/profile_resetter.h"
 
 #include "base/prefs/pref_service.h"
 #include "base/synchronization/cancellation_flag.h"
 #include "chrome/browser/browsing_data/browsing_data_helper.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/google/google_url_tracker.h"
 #include "chrome/browser/profile_resetter/brandcoded_default_settings.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search_engines/search_terms_data.h"
 #include "chrome/browser/search_engines/template_url_prepopulate_data.h"
 #include "chrome/browser/search_engines/template_url_service.h"
 #include "chrome/browser/search_engines/template_url_service_factory.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_iterator.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/installer/util/browser_distribution.h"
 #include "content/public/browser/browser_thread.h"
+#include "extensions/browser/extension_system.h"
 #include "extensions/browser/management_policy.h"
 
 #if defined(OS_WIN)
 #include "base/base_paths.h"
 #include "base/path_service.h"
 #include "chrome/installer/util/shell_util.h"
 #include "content/public/browser/browser_thread.h"
 
 namespace {
 
@@ skipping 300 matching lines @@
         chrome_exe,
         false,
         cancel,
         &shortcuts);
   }
   return shortcuts;
 #else
   return std::vector<ShortcutCommand>();
 #endif
 }