Implement app banner info bars on desktop.

chrome/browser/banners/app_banner_manager_desktop.h

Index: chrome/browser/banners/app_banner_manager_desktop.h
diff --git a/chrome/browser/banners/app_banner_manager_desktop.h b/chrome/browser/banners/app_banner_manager_desktop.h
new file mode 100644
index 0000000000000000000000000000000000000000..be12de81b3cbc21022c7d8745c0b06c182f3c8a6
--- /dev/null
+++ b/chrome/browser/banners/app_banner_manager_desktop.h
@@ -0,0 +1,32 @@
+// Copyright 2015 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_BANNERS_APP_BANNER_MANAGER_DESKTOP_H_
+#define CHROME_BROWSER_BANNERS_APP_BANNER_MANAGER_DESKTOP_H_
+
+#include "chrome/browser/banners/app_banner_manager.h"
+
+#include "content/public/browser/web_contents_user_data.h"
+
+namespace banners {
+
+class AppBannerManagerDesktop
+    : public AppBannerManager,
+      public content::WebContentsUserData<AppBannerManagerDesktop> {
+
+ protected:
+  AppBannerDataFetcher* CreateAppBannerDataFetcher(
+      base::WeakPtr<AppBannerDataFetcher::Delegate> weak_delegate,
+      const int ideal_icon_size) override;
+
+ private:
+  explicit AppBannerManagerDesktop(content::WebContents* web_contents);
+  friend class content::WebContentsUserData<AppBannerManagerDesktop>;
+
+  DISALLOW_COPY_AND_ASSIGN(AppBannerManagerDesktop);
+};
+
+}  // namespace banners
+
+#endif  // CHROME_BROWSER_BANNERS_APP_BANNER_MANAGER_DESKTOP_H_