Mus: Implement GpuMain mojo interface

services/ui/ws/gpu_service_proxy.cc

Index: services/ui/ws/gpu_service_proxy.cc
diff --git a/services/ui/ws/gpu_service_proxy.cc b/services/ui/ws/gpu_service_proxy.cc
index bdac226d811bca4d074f5391bc6e47c9dbbf9d42..38f8350b6001e8eef282a1025671b9864d19dc71 100644
--- a/services/ui/ws/gpu_service_proxy.cc
+++ b/services/ui/ws/gpu_service_proxy.cc
@@ -35,6 +35,8 @@ GpuServiceProxy::GpuServiceProxy(GpuServiceProxyDelegate* delegate)
   // TODO(sad): Once GPU process is split, this would look like:
   //   connector->ConnectToInterface("gpu", &gpu_service_);
   gpu_main_.Create(GetProxy(&gpu_service_));
+  pending_display_compositor_factory_request_ =
+      GetProxy(&display_compositor_factory_);
   gpu_service_->Initialize(
       base::Bind(&GpuServiceProxy::OnInitialized, base::Unretained(this)));
   gpu_memory_buffer_manager_ = base::MakeUnique<MusGpuMemoryBufferManager>(
@@ -51,11 +53,15 @@ void GpuServiceProxy::Add(mojom::GpuServiceRequest request) {
 void GpuServiceProxy::CreateDisplayCompositor(
     cc::mojom::DisplayCompositorRequest request,
     cc::mojom::DisplayCompositorClientPtr client) {
-  gpu_service_->CreateDisplayCompositor(std::move(request), std::move(client));
+  display_compositor_factory_->CreateDisplayCompositor(std::move(request),
+                                                       std::move(client));

[sadrul, 2016/11/29 19:46:41]

Dumb question: why can't WindowServer do this:
  connector->ConnectToInterface("gpu", &display_compositor_);
  display_compositor_->SetClient(std::move(display_compositor_client_binding_));

[Fady Samuel, 2016/11/29 20:08:58]

It can. It's a matter of style I guess. I see no compelling reason to go one way
over the other. If you feel strongly I'll change it. For now, I'm leaving it as
is.

 }
 
 void GpuServiceProxy::OnInitialized(const gpu::GPUInfo& gpu_info) {
   gpu_info_ = gpu_info;
+  // TODO(fsamuel): Once GPU process is split, this would look like:
+  //   connector->ConnectToInterface("gpu", &display_compositor_factory_);
+  gpu_main_.Create(std::move(pending_display_compositor_factory_request_));
 
   delegate_->OnGpuServiceInitialized();
 }