Implement the new wallpaper manager launcher window.

chrome/browser/chromeos/extensions/wallpaper_manager_api.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_CHROMEOS_EXTENSIONS_WALLPAPER_MANAGER_API_H_
+#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_MANAGER_API_H_
+#pragma once
+
+#include "base/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/observer_list.h"
+#include "base/time.h"
+#include "chrome/browser/extensions/extension_function.h"
+#include "googleurl/src/gurl.h"
+#include "net/url_request/url_fetcher_delegate.h"
+
+// This is a place holder for api functions. Following up CL will use this file
+// to add some wallpaper manager specific api functions.

[flackr, 2012/07/04 22:20:57]

While it only has 1 function, it is not really a placeholder anymore. You can
say this is the wallpaper manager API.

[bshe, 2012/07/05 13:54:50]

Done.

+
+extern const char kWallpaperManagerDomain[];
+
+namespace wallpaper_manager_util {
+
+// Opens wallpaper manager application.
+void OpenWallpaperManager();
+
+}  // namespace wallpaper_manager_util
+
+#endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_WALLPAPER_MANAGER_API_H_