cc: Get rid of non-delegated rendering in most cc unit tests.

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/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,
                     ScrollbarPart part,
                     const gfx::Rect& content_rect));
 };
 
 TEST(PaintedScrollbarLayerTest, NeedsPaint) {
-  FakeLayerTreeHostClient fake_client_(FakeLayerTreeHostClient::DIRECT_3D);
+  FakeLayerTreeHostClient fake_client_;
   TestTaskGraphRunner task_graph_runner_;
   std::unique_ptr<FakeLayerTreeHost> layer_tree_host_;
 
   layer_tree_host_ =
       FakeLayerTreeHost::Create(&fake_client_, &task_graph_runner_);
   RendererCapabilities renderer_capabilities;
   renderer_capabilities.max_texture_size = 2048;
   layer_tree_host_->set_renderer_capabilities(renderer_capabilities);
 
   MockScrollbar* scrollbar = new MockScrollbar();
@@ skipping 34 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