cc: Make single-thread renderer compositor always synchronous.

content/renderer/gpu/render_widget_compositor_unittest.cc

Index: content/renderer/gpu/render_widget_compositor_unittest.cc
diff --git a/content/renderer/gpu/render_widget_compositor_unittest.cc b/content/renderer/gpu/render_widget_compositor_unittest.cc
index e42fb5845b716cfc8476405baf1ba7aa79552417..48f5968f49c9a9a92c4a341a417c25f8584227ed 100644
--- a/content/renderer/gpu/render_widget_compositor_unittest.cc
+++ b/content/renderer/gpu/render_widget_compositor_unittest.cc
@@ -232,8 +232,6 @@ class RenderWidgetCompositorOutputSurfaceTest : public testing::Test {
   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();