media: Add GpuMojoMediaClient.

content/gpu/gpu_child_thread.cc

Index: content/gpu/gpu_child_thread.cc
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index 994caed88c3cc88072e544cbbac1564c6ba2b8c9..361ab8e1a7331ad53855656bcb531de4ad3dd997 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -359,7 +359,8 @@ void GpuChildThread::OnInitialize(const gpu::GpuPreferences& gpu_preferences) {
       new media::MediaGpuChannelManager(gpu_channel_manager_.get()));
 
   // Only set once per process instance.
-  service_factory_.reset(new GpuServiceFactory);
+  service_factory_.reset(
+      new GpuServiceFactory(media_gpu_channel_manager_->AsWeakPtr()));
 
   GetInterfaceRegistry()->AddInterface(base::Bind(
       &GpuChildThread::BindServiceFactoryRequest, base::Unretained(this)));