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

cc/layers/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/layer.h"
 
 #include "cc/animation/keyframed_animation_curve.h"
 #include "cc/base/math_util.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/resources/layer_painter.h"
@@ skipping 33 matching lines @@
     InitializeSingleThreaded(client, base::MessageLoopProxy::current());
   }
 
   MOCK_METHOD0(SetNeedsCommit, void());
   MOCK_METHOD0(SetNeedsUpdateLayers, void());
   MOCK_METHOD0(SetNeedsFullTreeSync, void());
 };
 
 class MockLayerPainter : public LayerPainter {
  public:
-  virtual void Paint(SkCanvas* canvas,
-                     const gfx::Rect& content_rect,
-                     gfx::RectF* opaque) OVERRIDE {}
+  virtual void Paint(SkCanvas* canvas, const gfx::Rect& content_rect) OVERRIDE {
+  }
 };
 
 class LayerTest : public testing::Test {
  public:
   LayerTest()
       : host_impl_(&proxy_, &shared_bitmap_manager_),
         fake_client_(FakeLayerTreeHostClient::DIRECT_3D) {}
 
  protected:
   virtual void SetUp() OVERRIDE {
@@ skipping 1124 matching lines @@
   root_layer->AddChild(becomes_not_draws_content);
   EXPECT_EQ(0, root_layer->NumDescendantsThatDrawContent());
 
   becomes_draws_content->SetIsDrawable(true);
   root_layer->AddChild(becomes_draws_content);
   EXPECT_EQ(1, root_layer->NumDescendantsThatDrawContent());
 }
 
 }  // namespace
 }  // namespace cc