cc: Make single-thread renderer compositor always synchronous.

content/renderer/gpu/render_widget_compositor_unittest.cc

 // Copyright 2014 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 "content/renderer/gpu/render_widget_compositor.h"
 
 #include "cc/output/begin_frame_args.h"
 #include "cc/test/failure_output_surface.h"
 #include "cc/trees/layer_tree_host.h"
 #include "components/scheduler/renderer/renderer_scheduler.h"
@@ skipping 214 matching lines @@
   bool use_null_output_surface_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetCompositorOutputSurface);
 };
 
 class RenderWidgetCompositorOutputSurfaceTest : public testing::Test {
  public:
   RenderWidgetCompositorOutputSurfaceTest()
       : render_widget_(make_scoped_refptr(new RenderWidgetOutputSurface)),
         compositor_deps_(make_scoped_ptr(new FakeCompositorDependencies)) {
-    // Required in order to call the synchronous LayerTreeHost::Composite.
-    compositor_deps_->set_use_single_thread_scheduler(false);
     render_widget_compositor_.reset(new RenderWidgetCompositorOutputSurface(
         render_widget_.get(), compositor_deps_.get()));
     render_widget_compositor_->Initialize();
     render_widget_->SetCompositor(render_widget_compositor_.get());
   }
 
   void RunTest(bool use_null_output_surface,
                int num_failures_before_success,
                int expected_successes,
                int expected_fallback_succeses) {
@@ skipping 63 matching lines @@
 }
 
 TEST_F(RenderWidgetCompositorOutputSurfaceTest, FallbackSuccessNormalSuccess) {
   // The first success is a fallback, but the next should not be a fallback.
   RunTest(false, RenderWidgetCompositor::OUTPUT_SURFACE_RETRIES_BEFORE_FALLBACK,
           1, 1);
 }
 
 }  // namespace
 }  // namespace content