Mus: Delete unnecessary sync token in DirectOutputSurfaceOzone

services/ui/surfaces/direct_output_surface_ozone.cc

 // Copyright 2016 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.
 
 #include "services/ui/surfaces/direct_output_surface_ozone.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
@@ skipping 93 matching lines @@
 
   buffer_queue_->SwapBuffers(frame.sub_buffer_rect);
 
   // Code combining GpuBrowserCompositorOutputSurface + DirectOutputSurface
   if (frame.sub_buffer_rect == gfx::Rect(frame.size)) {
     context_provider_->ContextSupport()->Swap();
   } else {
     context_provider_->ContextSupport()->PartialSwapBuffers(
         frame.sub_buffer_rect);
   }
-
-  gpu::gles2::GLES2Interface* gl = context_provider_->ContextGL();
-  const GLuint64 fence_sync = gl->InsertFenceSyncCHROMIUM();
-  gl->ShallowFlushCHROMIUM();
-
-  gpu::SyncToken sync_token;
-  gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, sync_token.GetData());
 }
 
 uint32_t DirectOutputSurfaceOzone::GetFramebufferCopyTextureFormat() {
   return buffer_queue_->internal_format();
 }
 
 cc::OverlayCandidateValidator*
 DirectOutputSurfaceOzone::GetOverlayCandidateValidator() const {
   return nullptr;
 }
@@ skipping 36 matching lines @@
   }
 
   buffer_queue_->PageFlipComplete();
   client_->DidReceiveSwapBuffersAck();
 
   if (force_swap)
     client_->SetNeedsRedrawRect(gfx::Rect(swap_size_));
 }
 
 }  // namespace ui