[NOT FOR COMMIT] Fully replace SkCanvas uses.

cc/layers/painted_scrollbar_layer_unittest.cc

 // Copyright 2015 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/painted_scrollbar_layer.h"
 
 #include "cc/animation/animation_host.h"
 #include "cc/test/fake_layer_tree_host.h"
 #include "cc/test/fake_layer_tree_host_client.h"
 #include "cc/test/fake_scrollbar.h"
 #include "cc/test/test_task_graph_runner.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 using ::testing::Mock;
 using ::testing::_;
 
 namespace cc {
 
 namespace {
 
 class MockScrollbar : public FakeScrollbar {
  public:
   MockScrollbar() : FakeScrollbar(true, true, true) {}
   MOCK_METHOD3(PaintPart,
-               void(SkCanvas* canvas,
+               void(CdlCanvas* canvas,
                     ScrollbarPart part,
                     const gfx::Rect& content_rect));
 };
 
 TEST(PaintedScrollbarLayerTest, NeedsPaint) {
   FakeLayerTreeHostClient fake_client_;
   TestTaskGraphRunner task_graph_runner_;
 
   auto animation_host = AnimationHost::CreateForTesting(ThreadInstance::MAIN);
   auto layer_tree_host = FakeLayerTreeHost::Create(
@@ skipping 38 matching lines @@
   EXPECT_CALL(*scrollbar, PaintPart(_, THUMB, _)).Times(0);
   EXPECT_CALL(*scrollbar, PaintPart(_, TRACK, _)).Times(1);
   scrollbar->set_needs_paint_thumb(false);
   scrollbar->set_needs_paint_track(true);
   scrollbar_layer->Update();
   Mock::VerifyAndClearExpectations(scrollbar);
 }
 
 }  // namespace
 }  // namespace cc