Show Media Router toolbar icon ephemerally for MR dialogs

chrome/browser/ui/webui/media_router/media_router_test.cc

Index: chrome/browser/ui/webui/media_router/media_router_test.cc
diff --git a/chrome/browser/ui/webui/media_router/media_router_test.cc b/chrome/browser/ui/webui/media_router/media_router_test.cc
deleted file mode 100644
index 097a2449e46cdba67aa1c20fb86ab35a7b567abe..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/webui/media_router/media_router_test.cc
+++ /dev/null
@@ -1,15 +0,0 @@
-// 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.
-
-#include "chrome/browser/ui/webui/media_router/media_router_test.h"
-
-#include "chrome/test/base/dialog_test_browser_window.h"
-
-MediaRouterTest::MediaRouterTest() {}
-
-MediaRouterTest::~MediaRouterTest() {}
-
-BrowserWindow* MediaRouterTest::CreateBrowserWindow() {
-  return new DialogTestBrowserWindow;
-}