[Media Router] Factor extension-related logic out of MediaRouterMojoImpl

chrome/browser/media/router/mojo/media_router_mojo_test.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_MEDIA_ROUTER_MOJO_MEDIA_ROUTER_MOJO_TEST_H_
 #define CHROME_BROWSER_MEDIA_ROUTER_MOJO_MEDIA_ROUTER_MOJO_TEST_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 232 matching lines @@
   void TearDown() override;
 
   void ProcessEventLoop();
 
   void ConnectProviderManagerService();
 
   const std::string& extension_id() const { return extension_->id(); }
 
   MediaRouterMojoImpl* router() const { return mock_media_router_.get(); }
 
+  Profile* profile() { return &profile_; }
+
   // Mock objects.
   MockMediaRouteProvider mock_media_route_provider_;
-  testing::NiceMock<MockEventPageTracker> mock_event_page_tracker_;
 
   // Mojo proxy object for |mock_media_router_|
   media_router::mojom::MediaRouterPtr media_router_proxy_;
 
   RegisterMediaRouteProviderHandler provide_handler_;
 
  private:
   content::TestBrowserThreadBundle test_thread_bundle_;
   scoped_refptr<extensions::Extension> extension_;
   TestingProfile profile_;
   std::unique_ptr<MediaRouterMojoImpl> mock_media_router_;
   std::unique_ptr<mojo::Binding<mojom::MediaRouteProvider>> binding_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaRouterMojoTest);
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_BROWSER_MEDIA_ROUTER_MOJO_MEDIA_ROUTER_MOJO_TEST_H_