cc: Create a cc::ScrollbarThemePainter and an adapter class in compositor bindings.

cc/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/layer.h"
 
 #include "cc/keyframed_animation_curve.h"
 #include "cc/layer_impl.h"
 #include "cc/layer_painter.h"
 #include "cc/layer_tree_host.h"
@@ skipping 40 matching lines @@
 
     MOCK_METHOD0(setNeedsCommit, void());
     MOCK_METHOD0(setNeedsFullTreeSync, void());
 
 private:
     FakeLayerImplTreeHostClient m_fakeClient;
 };
 
 class MockLayerPainter : public LayerPainter {
 public:
-    virtual void paint(SkCanvas*, const gfx::Rect&, gfx::RectF&) OVERRIDE { }
+    virtual void paint(SkCanvas*, gfx::Rect, gfx::RectF&) OVERRIDE { }
 };
 
 
 class LayerTest : public testing::Test {
 public:
     LayerTest()
         : m_hostImpl(&m_proxy)
     {
     }
 
@@ skipping 782 matching lines @@
     scoped_refptr<MockLayer> layer(new MockLayer);
     EXPECT_FALSE(layer->needsDisplay());
     layer->setBounds(gfx::Size(0, 10));
     EXPECT_FALSE(layer->needsDisplay());
     layer->setBounds(gfx::Size(10, 10));
     EXPECT_TRUE(layer->needsDisplay());
 }
 
 }  // namespace
 }  // namespace cc