Show Media Router toolbar icon ephemerally for MR dialogs

chrome/browser/media/router/media_router_dialog_controller_unittest.cc

 // 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.
 
 #include <memory>
 
 #include "chrome/browser/media/router/create_presentation_connection_request.h"
 #include "chrome/browser/media/router/media_router_dialog_controller.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/common/features.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::Return;
 
 namespace media_router {
@@ skipping 51 matching lines @@
         base::Bind(&MediaRouterDialogControllerTest::RequestSuccess,
                    base::Unretained(this)),
         base::Bind(&MediaRouterDialogControllerTest::RequestError,
                    base::Unretained(this)));
   }
 
   std::unique_ptr<TestMediaRouterDialogController> dialog_controller_;
   std::unique_ptr<MockWebContentsDelegate> web_contents_delegate_;
 };
 
+#if BUILDFLAG(ANDROID_JAVA_UI)
+// The non-Android implementation is tested in
+// MediaRouterDialogControllerImplTest.
 TEST_F(MediaRouterDialogControllerTest, CreateForWebContents) {
   MediaRouterDialogController* dialog_controller =
       MediaRouterDialogController::GetOrCreateForWebContents(web_contents());
   ASSERT_NE(dialog_controller, nullptr);
 }
+#endif
 
 TEST_F(MediaRouterDialogControllerTest, ShowAndHideDialog) {
   EXPECT_CALL(*web_contents_delegate_, ActivateContents(web_contents()));
   EXPECT_TRUE(dialog_controller_->ShowMediaRouterDialog());
   EXPECT_TRUE(dialog_controller_->IsShowingMediaRouterDialog());
 
   // If a dialog is already shown, ShowMediaRouterDialog() should return false.
   EXPECT_CALL(*web_contents_delegate_, ActivateContents(web_contents()));
   EXPECT_FALSE(dialog_controller_->ShowMediaRouterDialog());
 
@@ skipping 13 matching lines @@
   EXPECT_TRUE(dialog_controller_->IsShowingMediaRouterDialog());
 
   // If a dialog is already shown, ShowMediaRouterDialogForPresentation() should
   // return false.
   EXPECT_CALL(*web_contents_delegate_, ActivateContents(web_contents()));
   EXPECT_FALSE(
       dialog_controller_->ShowMediaRouterDialogForPresentation(GetRequest()));
 }
 
 }  // namespace media_router