[MediaRouter] The minimal change to make everything build on Android.

chrome/browser/media/router/media_router_mojo_impl_factory.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_MEDIA_ROUTER_MOJO_IMPL_FACTORY_H_
-#define CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_MOJO_IMPL_FACTORY_H_
-
-#include "base/lazy_instance.h"
-#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
-
-namespace content {
-class BrowserContext;
-}
-
-namespace media_router {
-
-class MediaRouterMojoImpl;
-
-// A factory that lazily returns a MediaRouterMojoImpl object for a given
-// BrowserContext.
-class MediaRouterMojoImplFactory : public BrowserContextKeyedServiceFactory {
- public:
-  static MediaRouterMojoImpl* GetApiForBrowserContext(
-      content::BrowserContext* context);
-
- private:
-  friend struct base::DefaultLazyInstanceTraits<MediaRouterMojoImplFactory>;
-
-  MediaRouterMojoImplFactory();
-  ~MediaRouterMojoImplFactory() override;
-
-  // BrowserContextKeyedServiceFactory interface.
-  KeyedService* BuildServiceInstanceFor(
-      content::BrowserContext* context) const override;
-  content::BrowserContext* GetBrowserContextToUse(
-      content::BrowserContext* context) const override;
-
-  DISALLOW_COPY_AND_ASSIGN(MediaRouterMojoImplFactory);
-};
-
-}  // namespace media_router
-
-#endif  // CHROME_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_MOJO_IMPL_FACTORY_H_