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

cc/layers/layer_proto_converter_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/layer_proto_converter.h"
 
 #include "cc/layers/empty_content_layer_client.h"
 #include "cc/layers/heads_up_display_layer.h"
 #include "cc/layers/layer.h"
 #include "cc/layers/picture_layer.h"
 #include "cc/proto/layer.pb.h"
 #include "cc/test/fake_layer_tree_host.h"
 #include "cc/test/fake_layer_tree_host_client.h"
 #include "cc/test/test_task_graph_runner.h"
 #include "cc/trees/layer_tree_settings.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace cc {
 namespace {
 class LayerProtoConverterTest : public testing::Test {
- public:
-  LayerProtoConverterTest()
-      : fake_client_(FakeLayerTreeHostClient::DIRECT_3D) {}
-
  protected:
   void SetUp() override {
     layer_tree_host_ =
         FakeLayerTreeHost::Create(&fake_client_, &task_graph_runner_);
   }
 
   void TearDown() override {
     layer_tree_host_->SetRootLayer(nullptr);
     layer_tree_host_ = nullptr;
   }
@@ skipping 361 matching lines @@
   // serialize to.
   proto::LayerNode layer_node;
   new_root->SetTypeForProtoSerialization(&layer_node);
   EXPECT_EQ(proto::LayerNode::HEADS_UP_DISPLAY_LAYER, layer_node.type());
 
   new_root->SetLayerTreeHost(nullptr);
 }
 
 }  // namespace
 }  // namespace cc