gpu: Don't flush for future sync point generation

gpu/command_buffer/client/gles2_implementation.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
@@ skipping 3964 matching lines @@
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glInsertSyncPointCHROMIUM");
   helper_->CommandBufferHelper::Flush();
   return gpu_control_->InsertSyncPoint();
 }
 
 GLuint GLES2Implementation::InsertFutureSyncPointCHROMIUM() {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glInsertFutureSyncPointCHROMIUM");
   DCHECK(capabilities_.future_sync_points);
-  helper_->CommandBufferHelper::Flush();
   return gpu_control_->InsertFutureSyncPoint();
 }
 
 void GLES2Implementation::RetireSyncPointCHROMIUM(GLuint sync_point) {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG("[" << GetLogPrefix() << "] glRetireSyncPointCHROMIUM("
                      << sync_point << ")");
   DCHECK(capabilities_.future_sync_points);
   helper_->CommandBufferHelper::Flush();
   gpu_control_->RetireSyncPoint(sync_point);
@@ skipping 267 matching lines @@
   return true;
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu