gpu: GPU service scheduler.

gpu/command_buffer/client/gpu_control.h

Index: gpu/command_buffer/client/gpu_control.h
diff --git a/gpu/command_buffer/client/gpu_control.h b/gpu/command_buffer/client/gpu_control.h
index b98d79c8527f4de97490f42fa6868c56ea11e265..6737b9a70395c745650f916dd80e75df07210cda 100644
--- a/gpu/command_buffer/client/gpu_control.h
+++ b/gpu/command_buffer/client/gpu_control.h
@@ -69,6 +69,8 @@ class GPU_EXPORT GpuControl {
   // services and will be treated as a NOP for in process command buffers.
   virtual void EnsureWorkVisible() = 0;
 
+  virtual void EnsureWorkVisibleAsync() = 0;

[piman, 2017/05/09 00:48:38]

nit: please provide documentation here.
Not too sure about the naming. What it does really is flush the ordering
barriers, right? As is it sounds you would expect it to be like
EnsureWorkVisible but with a callback instead of synchronous.

[sunnyps, 2017/05/10 23:15:15]

Done.

+
   // The namespace and command buffer ID forms a unique pair for all existing
   // GpuControl (on client) and matches for the corresponding command buffer
   // (on server) in a single server process. The extra command buffer data can