gpu: Reuse transfer buffers more aggresively

gpu/command_buffer/service/async_pixel_transfer_manager_share_group.cc

Index: gpu/command_buffer/service/async_pixel_transfer_manager_share_group.cc
diff --git a/gpu/command_buffer/service/async_pixel_transfer_manager_share_group.cc b/gpu/command_buffer/service/async_pixel_transfer_manager_share_group.cc
index dcdab1c69adb5dd2a4c9be58a9351ece0b258849..1ef75ee5af8428b1e8b6c2f010d86da273bd6369 100644
--- a/gpu/command_buffer/service/async_pixel_transfer_manager_share_group.cc
+++ b/gpu/command_buffer/service/async_pixel_transfer_manager_share_group.cc
@@ -536,6 +536,11 @@ void AsyncPixelTransferManagerShareGroup::BindCompletedAsyncTransfers() {
   }
 }
 
+void AsyncPixelTransferManagerShareGroup::AsyncRun(
+    const base::Closure& callback) {
+  transfer_message_loop_proxy()->PostTask(FROM_HERE, callback);
+}
+
 void AsyncPixelTransferManagerShareGroup::AsyncNotifyCompletion(
     const AsyncMemoryParams& mem_params,
     AsyncPixelTransferCompletionObserver* observer) {
@@ -544,8 +549,7 @@ void AsyncPixelTransferManagerShareGroup::AsyncNotifyCompletion(
             mem_params.shm_size);
   // Post a PerformNotifyCompletion task to the upload thread. This task
   // will run after all async transfers are complete.
-  transfer_message_loop_proxy()->PostTask(
-      FROM_HERE,
+  AsyncRun(
       base::Bind(&PerformNotifyCompletion,
                  mem_params,
                  base::Owned(