ui: Prefer +/- operators to apply offsets.

content/common/gpu/image_transport_surface.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.
 
 #if defined(ENABLE_GPU)
 
 #include "content/common/gpu/image_transport_surface.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 335 matching lines @@
   }
 }
 
 gfx::Size PassThroughImageTransportSurface::GetSize() {
   return GLSurfaceAdapter::GetSize();
 }
 
 PassThroughImageTransportSurface::~PassThroughImageTransportSurface() {}
 
 void PassThroughImageTransportSurface::SendVSyncUpdateIfAvailable() {
-  base::TimeTicks timebase;
-  base::TimeDelta interval;
-  if (GetVSyncParameters(&timebase, &interval)) {
-    helper_->SendUpdateVSyncParameters(timebase, interval);
-  }
+  GetVSyncParameters(
+      base::Bind(&ImageTransportHelper::SendUpdateVSyncParameters,
+                 helper_->AsWeakPtr()));
 }
 
 }  // namespace content
 
 #endif  // defined(ENABLE_GPU)