Show origin for hosted apps that navigate away from their start origin.

chrome/browser/ui/extensions/hosted_app_browser_controller.h

+// 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_UI_EXTENSIONS_HOSTED_APP_BROWSER_CONTROLLER_H_
+#define CHROME_BROWSER_UI_EXTENSIONS_HOSTED_APP_BROWSER_CONTROLLER_H_
+
+#include <string>
+
+#include "base/macros.h"
+
+class Browser;
+class Profile;
+
+namespace extensions {
+
+// Class to encapsulate logic to control the browser UI for hosted apps.
+class HostedAppBrowserController {
+ public:
+  // Indicates whether |browser| is a hosted app browser.
+  static bool IsForHostedApp(Browser* browser);
+
+  explicit HostedAppBrowserController(Browser* browser);
+  ~HostedAppBrowserController();
+
+  // Whether the browser being controlled can ever show the location bar.
+  bool SupportsLocationBar() const;
+
+  // Whether the browser being controlled should be currently showing the
+  // location bar.
+  bool ShouldShowLocationBar() const;
+
+  // Updates the location bar visibility based on whether it should be
+  // currently visible or not. If |animate| is set, the change will be
+  // animated.
+  void UpdateLocationBarVisibility(bool animate) const;
+
+  // Whether the controlled browser should use the web app style frame.
+  bool should_use_web_app_frame() const { return should_use_web_app_frame_; }
+
+ private:
+  Browser* browser_;
+  const std::string extension_id_;
+  bool should_use_web_app_frame_;
+
+  DISALLOW_COPY_AND_ASSIGN(HostedAppBrowserController);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_UI_EXTENSIONS_HOSTED_APP_BROWSER_CONTROLLER_H_