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

cc/trees/layer_tree_host_unittest_serialization.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/trees/layer_tree_host.h"
 
 #include <memory>
 
 #include "base/memory/ptr_util.h"
 #include "cc/layers/empty_content_layer_client.h"
@@ skipping 45 matching lines @@
   ContentLayerClient* client = EmptyContentLayerClient::GetInstance();
   return FakePictureLayer::CreateWithRecordingSource(
       client, std::move(recording_source));
 }
 }  // namespace
 
 class LayerTreeHostSerializationTest : public testing::Test {
  public:
   LayerTreeHostSerializationTest()
       : image_serialization_processor_(
-            base::WrapUnique(new FakeImageSerializationProcessor)),
-        client_src_(FakeLayerTreeHostClient::DIRECT_3D),
-        client_dst_(FakeLayerTreeHostClient::DIRECT_3D) {}
+            base::MakeUnique<FakeImageSerializationProcessor>()) {}
 
  protected:
   void SetUp() override {
     LayerTreeSettings settings;
     layer_tree_host_src_ = FakeLayerTreeHost::Create(
         &client_src_, &task_graph_runner_src_, settings,
         CompositorMode::SINGLE_THREADED, image_serialization_processor_.get());
     layer_tree_host_dst_ = FakeLayerTreeHost::Create(
         &client_dst_, &task_graph_runner_dst_, settings,
         CompositorMode::SINGLE_THREADED, image_serialization_processor_.get());
@@ skipping 369 matching lines @@
 
 TEST_F(LayerTreeHostSerializationTest, AddAndRemoveNodeFromLayerTree) {
   RunAddAndRemoveNodeFromLayerTree();
 }
 
 TEST_F(LayerTreeHostSerializationTest, PictureLayerMultipleSerializations) {
   RunPictureLayerMultipleSerializationsTest();
 }
 
 }  // namespace cc