cc: Remove the opaque rect return-parameter from ContentLayerClient.

cc/trees/layer_tree_host_common_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/trees/layer_tree_host_common.h"
 
 #include <set>
 
 #include "cc/animation/layer_animation_controller.h"
 #include "cc/animation/transform_operations.h"
@@ skipping 37 matching lines @@
 
 bool LayerWithForcedDrawsContent::DrawsContent() const { return true; }
 
 class MockContentLayerClient : public ContentLayerClient {
  public:
   MockContentLayerClient() {}
   virtual ~MockContentLayerClient() {}
   virtual void PaintContents(
       SkCanvas* canvas,
       const gfx::Rect& clip,
-      gfx::RectF* opaque,
       ContentLayerClient::GraphicsContextStatus gc_status) OVERRIDE {}
   virtual void DidChangeLayerCanUseLCDText() OVERRIDE {}
   virtual bool FillsBoundsCompletely() const OVERRIDE { return false; }
 };
 
 scoped_refptr<ContentLayer> CreateDrawableContentLayer(
     ContentLayerClient* delegate) {
   scoped_refptr<ContentLayer> to_return = ContentLayer::Create(delegate);
   to_return->SetIsDrawable(true);
   return to_return;
@@ skipping 8485 matching lines @@
   EXPECT_FLOAT_EQ(4.f,
                   child1_layer->replica_layer()
                       ->mask_layer()
                       ->draw_properties()
                       .device_scale_factor);
   EXPECT_FLOAT_EQ(4.f, child2_layer->draw_properties().device_scale_factor);
 }
 
 }  // namespace
 }  // namespace cc