gpu: Reuse transfer buffers more aggresively

gpu/command_buffer/service/async_pixel_transfer_manager_egl.cc

Index: gpu/command_buffer/service/async_pixel_transfer_manager_egl.cc
diff --git a/gpu/command_buffer/service/async_pixel_transfer_manager_egl.cc b/gpu/command_buffer/service/async_pixel_transfer_manager_egl.cc
index 7e0d515e49c172b1ede3739bdceeca60b1947758..9a54e55012186147d2352573c6e1b68db6750dcd 100644
--- a/gpu/command_buffer/service/async_pixel_transfer_manager_egl.cc
+++ b/gpu/command_buffer/service/async_pixel_transfer_manager_egl.cc
@@ -727,6 +727,11 @@ void AsyncPixelTransferManagerEGL::BindCompletedAsyncTransfers() {
   }
 }
 
+void AsyncPixelTransferManagerEGL::AsyncRunWhenCompleted(
+    base::Callback<void()> callback) {
+  transfer_message_loop_proxy()->PostTask(FROM_HERE, callback);
+}
+
 void AsyncPixelTransferManagerEGL::AsyncNotifyCompletion(
     const AsyncMemoryParams& mem_params,
     AsyncPixelTransferCompletionObserver* observer) {