Show Media Router toolbar icon ephemerally for MR dialogs

chrome/browser/ui/toolbar/mock_media_router_action_controller.h

Index: chrome/browser/ui/toolbar/mock_media_router_action_controller.h
diff --git a/chrome/browser/ui/toolbar/mock_media_router_action_controller.h b/chrome/browser/ui/toolbar/mock_media_router_action_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..86fba70870d1224db8ead30bf2cf20f2bf4c2f41
--- /dev/null
+++ b/chrome/browser/ui/toolbar/mock_media_router_action_controller.h
@@ -0,0 +1,29 @@
+// Copyright 2016 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_TOOLBAR_MOCK_MEDIA_ROUTER_ACTION_CONTROLLER_H_
+#define CHROME_BROWSER_UI_TOOLBAR_MOCK_MEDIA_ROUTER_ACTION_CONTROLLER_H_
+
+#include "chrome/browser/ui/toolbar/media_router_action_controller.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+class MockMediaRouterActionController : public MediaRouterActionController {
+ public:
+  explicit MockMediaRouterActionController(Profile* profile);
+  ~MockMediaRouterActionController() override;
+
+  MOCK_METHOD1(OnIssueUpdated, void(const media_router::Issue* issue));
+  MOCK_METHOD2(OnRoutesUpdated,
+               void(const std::vector<media_router::MediaRoute>& routes,
+                    const std::vector<media_router::MediaRoute::Id>&
+                        joinable_route_ids));
+  MOCK_METHOD0(OnDialogShown, void());
+  MOCK_METHOD0(OnDialogHidden, void());
+  MOCK_METHOD0(MaybeAddOrRemoveAction, void());
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockMediaRouterActionController);
+};
+
+#endif  // CHROME_BROWSER_UI_TOOLBAR_MOCK_MEDIA_ROUTER_ACTION_CONTROLLER_H_