Add OrderingBarrierCHROMIUM API.

gpu/command_buffer/common/command_buffer.h

Index: gpu/command_buffer/common/command_buffer.h
diff --git a/gpu/command_buffer/common/command_buffer.h b/gpu/command_buffer/common/command_buffer.h
index d846ec11a634c1f7bade9440d0a830c1327ce21f..931ea5b7da3d028b509462d51be2104562dfeb6c 100644
--- a/gpu/command_buffer/common/command_buffer.h
+++ b/gpu/command_buffer/common/command_buffer.h
@@ -90,6 +90,11 @@ class GPU_EXPORT CommandBuffer {
   // subsequent Flushes on the same GpuChannel.
   virtual void Flush(int32 put_offset) = 0;
 
+  // As Flush, ensuress that on the service side, commands up to put_offset

[piman, 2015/02/05 01:14:15]

typo: ensuress

[piman, 2015/02/06 03:37:48]

Still here in PS#7...

[vmiura, 2015/02/06 05:15:22]

Done.

+  // are processed but before subsequent Flushes on the GpuChannel, however
+  // the reader may not see the latest commands until Flushes on the channel.
+  virtual void ShallowFlush(int32 put_offset) = 0;
+
   // The writer calls this to wait until the current token is within a
   // specific range, inclusive. Can return early if an error is generated.
   virtual void WaitForTokenInRange(int32 start, int32 end) = 0;