cc: Make separate interface for BeginFrame ipc from OutputSurface

cc/layers/tiled_layer_unittest.cc

 // Copyright 2011 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 "cc/layers/tiled_layer.h"
 
 #include <limits>
 #include <vector>
 
 #include "base/run_loop.h"
@@ skipping 65 matching lines @@
 
  private:
   SynchronousOutputSurfaceLayerTreeHost(
       LayerTreeHostClient* client,
       SharedBitmapManager* manager,
       const LayerTreeSettings& settings,
       scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner)
       : LayerTreeHost(client, manager, NULL, settings),
         output_surface_created_(false) {
     LayerTreeHost::InitializeThreaded(base::MessageLoopProxy::current(),
-                                      impl_task_runner);
+                                      impl_task_runner,
+                                      nullptr);
   }
 
   bool output_surface_created_;
   base::RunLoop run_loop_;
 };
 
 class TiledLayerTest : public testing::Test {
  public:
   TiledLayerTest()
       : proxy_(nullptr),
@@ skipping 1657 matching lines @@
 
   // Rounding leads to an extra pixel.
   gfx::Rect expanded_layer_rect(layer_rect);
   expanded_layer_rect.set_height(32);
   EXPECT_RECT_EQ(expanded_layer_rect,
                  layer->tracking_layer_painter()->PaintedRect());
 }
 
 }  // namespace
 }  // namespace cc