GpuProcessHost: setup ipc to propagate supported GpuMemoryBufferAttribs

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index 7749da464a4d2790cbd2bc3fd6cb9055163779f8..fceea4588da4445d95d2d3088efb781c44c5c2d7 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -717,6 +717,22 @@ void GpuProcessHost::CreateGpuMemoryBuffer(
                  weak_ptr_factory_.GetWeakPtr()));
 }
 
+void GpuProcessHost::GetGpuMemoryBufferAttribs(
+    const GetGpuMemoryBufferAttribsCallback& callback) {
+  TRACE_EVENT0("gpu", "GpuProcessHost::GetGpuMemoryBufferAttribs");
+
+  DCHECK(CalledOnValidThread());
+
+  get_gpu_memory_buffer_attribs_requests_.push(callback);
+
+  if (get_gpu_memory_buffer_attribs_requests_.size() > 1)
+    return;
+
+  gpu_service_ptr_->GetGpuMemoryBufferAttribs(
+      base::Bind(&GpuProcessHost::OnGpuMemoryBufferAttribsReceived,
+                 weak_ptr_factory_.GetWeakPtr()));
+}
+
 void GpuProcessHost::DestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,
                                             int client_id,
                                             const gpu::SyncToken& sync_token) {
@@ -780,6 +796,17 @@ void GpuProcessHost::OnDestroyingVideoSurfaceAck() {
 }
 #endif
 
+void GpuProcessHost::OnGpuMemoryBufferAttribsReceived(
+    const gfx::GpuMemoryBufferAttribVector& supported_attribs) {
+  TRACE_EVENT0("gpu", "GpuProcessHost::OnGpuMemoryBufferAttribsReceived");
+
+  while (!get_gpu_memory_buffer_attribs_requests_.empty()) {
+    auto callback = get_gpu_memory_buffer_attribs_requests_.front();
+    get_gpu_memory_buffer_attribs_requests_.pop();
+    callback.Run(supported_attribs);
+  }
+}
+
 void GpuProcessHost::OnProcessLaunched() {
   UMA_HISTOGRAM_TIMES("GPU.GPUProcessLaunchTime",
                       base::TimeTicks::Now() - init_start_time_);
@@ -1058,6 +1085,12 @@ void GpuProcessHost::SendOutstandingReplies() {
                  BufferCreationStatus::GPU_HOST_INVALID);
   }
 
+  while (!get_gpu_memory_buffer_attribs_requests_.empty()) {
+    auto callback = get_gpu_memory_buffer_attribs_requests_.front();
+    get_gpu_memory_buffer_attribs_requests_.pop();
+    callback.Run(gfx::GpuMemoryBufferAttribVector());
+  }
+
   if (!send_destroying_video_surface_done_cb_.is_null())
     base::ResetAndReturn(&send_destroying_video_surface_done_cb_).Run();
 }