content/gpu: Set up a mojom connection between browser and gpu.

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 637b4802f198153f6e398699538b81439ebdf867..0da00b1f53c252b6faea95403f81ef88539e42bf 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -209,6 +209,8 @@ void GpuChildThread::Init(const base::Time& process_start_time) {
 
   if (GetContentClient()->gpu())  // NULL in tests.
     GetContentClient()->gpu()->Initialize(this);
+  channel()->AddAssociatedInterface(base::Bind(
+      &GpuChildThread::CreateGpuMainService, base::Unretained(this)));
 }
 
 void GpuChildThread::OnFieldTrialGroupFinalized(const std::string& trial_name,
@@ -216,6 +218,11 @@ void GpuChildThread::OnFieldTrialGroupFinalized(const std::string& trial_name,
   Send(new GpuHostMsg_FieldTrialActivated(trial_name));
 }
 
+void GpuChildThread::CreateGpuMainService(
+    ui::mojom::GpuMainAssociatedRequest request) {
+  // TODO(sad): Implement.
+}
+
 bool GpuChildThread::Send(IPC::Message* msg) {
   // The GPU process must never send a synchronous IPC message to the browser
   // process. This could result in deadlock.