Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/ui/app_list/recommended_apps.cc

 // Copyright 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/ui/app_list/recommended_apps.h"
 
 #include <algorithm>
 #include <vector>
 
 #include "base/bind.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/extensions/install_tracker.h"
 #include "chrome/browser/extensions/install_tracker_factory.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/recommended_apps_observer.h"
 #include "chrome/common/pref_names.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/pref_names.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_set.h"
 
 namespace app_list {
 
 namespace {
@@ skipping 104 matching lines @@
 }
 
 void RecommendedApps::OnAppsReordered() {}
 
 void RecommendedApps::OnAppInstalledToAppList(
     const std::string& extension_id) {}
 
 void RecommendedApps::OnShutdown() {}
 
 }  // namespace app_list