Mac ÜC: Make resize smooth

content/browser/renderer_host/render_widget_host_impl.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.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 1409 matching lines @@
   // chrome/browser/extensions/api/cast_streaming/performance_test.cc
   TRACE_EVENT0("renderer_host",
                "RenderWidgetHostImpl::OnCompositorSurfaceBuffersSwapped");
   // This trace event is used in
   // chrome/browser/extensions/api/cast_streaming/performance_test.cc
   UNSHIPPED_TRACE_EVENT0("test_fps",
                          TRACE_DISABLED_BY_DEFAULT("OnSwapCompositorFrame"));
   if (!ui::LatencyInfo::Verify(params.latency_info,
                                "ViewHostMsg_CompositorSurfaceBuffersSwapped"))
     return;
+
+  if (params.use_native_widget) {
+    RenderWidgetHelper::OnNativeSurfaceBuffersSwappedOnUIThread(params);
+    return;
+  }
+
   if (!view_) {
     AcceleratedSurfaceMsg_BufferPresented_Params ack_params;
     ack_params.sync_point = 0;
     RenderWidgetHostImpl::AcknowledgeBufferPresent(params.route_id,
                                                    params.gpu_process_host_id,
                                                    ack_params);
     return;
   }
   GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params gpu_params;
   gpu_params.surface_id = params.surface_id;
@@ skipping 941 matching lines @@
   }
 }
 
 SkBitmap::Config RenderWidgetHostImpl::PreferredReadbackFormat() {
   if (view_)
     return view_->PreferredReadbackFormat();
   return SkBitmap::kARGB_8888_Config;
 }
 
 }  // namespace content