Add Media Router Mojo impl code.

chrome/browser/media/router/media_router_mojo_test.h

Index: chrome/browser/media/router/media_router_mojo_test.h
diff --git a/chrome/browser/media/router/media_router_mojo_test.h b/chrome/browser/media/router/media_router_mojo_test.h
new file mode 100644
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+++ b/chrome/browser/media/router/media_router_mojo_test.h
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+// 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_MEDIA_ROUTER_MOJO_TEST_H_
+#define CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_MOJO_TEST_H_
+
+#include <string>
+
+#include "base/message_loop/message_loop.h"
+#include "chrome/browser/media/router/media_router_mojo_impl.h"
+#include "chrome/browser/media/router/mock_media_router.h"
+#include "chrome/browser/media/router/test_helper.h"
+#include "chrome/test/base/testing_profile.h"
+#include "mojo/common/message_pump_mojo.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media_router {
+
+class MediaRouterMojoImpl;
+
+// Tests the API call flow between the Media Router and the MRPM in both
+// directions. Calls are made through Mojo service bindings backed by mock
+// objects.
+//
+// Calls from the Media Router to the extension are verified with this flow:
+// api_impl_ -> mrpm_host_proxy_ -> mock_mrpm_host_
+class MediaRouterMojoTest : public ::testing::Test {
+ public:
+  MediaRouterMojoTest();
+  ~MediaRouterMojoTest() override;
+
+  void SetUp() override;
+
+  void ProcessEventLoop();
+
+  std::string extension_id() const { return "extensionId"; }
+
+ protected:
+  void ConnectProviderManagerService();
+
+  std::string extension_id_;
+
+  base::MessageLoop message_loop_;
+
+  scoped_ptr<MediaRouterMojoImpl> observer_impl_;
+
+  // Mock objects.
+  MockMojoMediaRouterService mock_mrpm_host_;
+  testing::NiceMock<MockEventPageTracker> mock_event_page_tracker_;
+
+  // Mojo service proxy objects, which are backed by the mock objects above.
+  media_router::interfaces::MediaRouterObserverPtr observer_proxy_;
+  interfaces::MediaRouterPtr mrpm_host_proxy_;
+
+  scoped_ptr<mojo::Binding<interfaces::MediaRouter>> binding;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MediaRouterMojoTest);
+};
+
+}  // namespace media_router
+
+#endif  // CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_MOJO_TEST_H_