app_list: Add sync animation.

chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h

Index: chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
diff --git a/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h b/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
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index 0000000000000000000000000000000000000000..5ec74a127c795dedf33cc5b902a2bab3b543c68c
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+++ b/chrome/browser/ui/ash/app_list/app_sync_ui_state_watcher.h
@@ -0,0 +1,36 @@
+// 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_UI_ASH_APP_LIST_APP_SYNC_UI_STATE_WATCHER_H_
+#define CHROME_BROWSER_UI_ASH_APP_LIST_APP_SYNC_UI_STATE_WATCHER_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "chrome/browser/ui/ash/app_sync_ui_state_observer.h"
+
+namespace app_list {
+class AppListModel;
+}
+
+class AppSyncUIState;
+class Profile;
+
+// AppSyncUIStateWatcher updates AppListModel status when AppSyncUIState
+// of the given profile changes.
+class AppSyncUIStateWatcher : public AppSyncUIStateObserver {
+ public:
+  AppSyncUIStateWatcher(Profile* profile, app_list::AppListModel* model);
+  virtual ~AppSyncUIStateWatcher();
+
+ private:
+  // AppSyncUIStateObserver overrides:
+  virtual void OnAppSyncUIStatusChanged() OVERRIDE;
+
+  AppSyncUIState* app_sync_ui_state_;
+  app_list::AppListModel* model_;  // Owned by AppListView
+
+  DISALLOW_COPY_AND_ASSIGN(AppSyncUIStateWatcher);
+};
+
+#endif  // CHROME_BROWSER_UI_ASH_APP_LIST_APP_SYNC_UI_STATE_WATCHER_H_