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

cc/layers/layer_position_constraint_unittest.cc

 // Copyright 2013 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_position_constraint.h"
 
 #include <vector>
 
 #include "cc/layers/layer.h"
 #include "cc/layers/layer_impl.h"
@@ skipping 43 matching lines @@
       root_layer->layer_tree_impl()->InnerViewportScrollLayer();
   inputs.outer_viewport_scroll_layer =
       root_layer->layer_tree_impl()->OuterViewportScrollLayer();
   EXPECT_FALSE(root_layer->layer_tree_impl()->property_trees()->needs_rebuild);
   LayerTreeHostCommon::CalculateDrawProperties(&inputs);
 }
 
 class LayerPositionConstraintTest : public testing::Test {
  public:
   LayerPositionConstraintTest()
-      : fake_client_(FakeLayerTreeHostClient::DIRECT_3D),
-        layer_tree_host_(
+      : layer_tree_host_(
             FakeLayerTreeHost::Create(&fake_client_, &task_graph_runner_)),
         root_impl_(nullptr),
         inner_viewport_container_layer_impl_(nullptr),
         scroll_layer_impl_(nullptr),
         outer_viewport_container_layer_impl_(nullptr),
         child_transform_layer_impl_(nullptr),
         child_impl_(nullptr),
         grand_child_impl_(nullptr),
         great_grand_child_impl_(nullptr) {
     layer_tree_host_->InitializeForTesting(
@@ skipping 1090 matching lines @@
   VerifySerializeAndDeserializeProto(true, false, true);
   VerifySerializeAndDeserializeProto(true, false, false);
   VerifySerializeAndDeserializeProto(false, true, true);
   VerifySerializeAndDeserializeProto(false, true, false);
   VerifySerializeAndDeserializeProto(false, false, true);
   VerifySerializeAndDeserializeProto(false, false, false);
 }
 
 }  // namespace
 }  // namespace cc