cc: Abstract the LayerTreeHost.

cc/test/layer_tree_pixel_test.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/test/layer_tree_pixel_test.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/command_line.h"
@@ skipping 32 matching lines @@
         scoped_refptr<ContextProvider>) {
   scoped_refptr<TestInProcessContextProvider> compositor_context_provider;
   scoped_refptr<TestInProcessContextProvider> worker_context_provider;
   if (test_type_ == PIXEL_TEST_GL) {
     compositor_context_provider = new TestInProcessContextProvider(nullptr);
     worker_context_provider =
         new TestInProcessContextProvider(compositor_context_provider.get());
   }
   bool synchronous_composite =
       !HasImplThread() &&
-      !layer_tree_host()->settings().single_thread_proxy_scheduler;
+      !layer_tree_host()->GetSettings().single_thread_proxy_scheduler;
   // Allow resource reclaiming for partial raster tests to get back
   // resources from the Display.
   bool force_disable_reclaim_resources = false;
   auto delegating_output_surface =
       base::MakeUnique<TestDelegatingOutputSurface>(
           compositor_context_provider, std::move(worker_context_provider),
           CreateDisplayOutputSurface(compositor_context_provider),
           shared_bitmap_manager(), gpu_memory_buffer_manager(),
           RendererSettings(), ImplThreadTaskRunner(), synchronous_composite,
           force_disable_reclaim_resources);
@@ skipping 226 matching lines @@
 }
 
 void LayerTreePixelTest::Finish() {
   std::unique_ptr<gpu::GLInProcessContext> context =
       CreateTestInProcessContext();
   GLES2Interface* gl = context->GetImplementation();
   gl->Finish();
 }
 
 }  // namespace cc