cc: Remove SetLayerTreeHostClientReady()

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index c9a9a41fd9cdd4e78a87fd5dd172f2f40078c166..78e5df11a24cc7577e4b48c5d18a89dd7e95aa90 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -492,7 +492,7 @@ RenderWidget::RenderWidget(CompositorDependencies* compositor_deps,
       need_update_rect_for_auto_resize_(false),
       did_show_(false),
       is_hidden_(hidden),
-      never_visible_(never_visible),
+      compositor_never_visible_(never_visible),
       is_fullscreen_granted_(false),
       display_mode_(blink::WebDisplayModeUndefined),
       has_focus_(false),
@@ -967,7 +967,7 @@ GURL RenderWidget::GetURLForGraphicsContext3D() {
 scoped_ptr<cc::OutputSurface> RenderWidget::CreateOutputSurface(bool fallback) {
   // For widgets that are never visible, we don't start the compositor, so we
   // never get a request for a cc::OutputSurface.
-  DCHECK(!never_visible_);
+  DCHECK(!compositor_never_visible_);
 
 #if defined(OS_ANDROID)
   if (SynchronousCompositorFactory* factory =
@@ -1339,6 +1339,12 @@ void RenderWidget::initializeLayerTreeView() {
 
   compositor_ = RenderWidgetCompositor::Create(this, compositor_deps_);
   compositor_->setViewportSize(size_, physical_backing_size_);
+
+  // For background pages and certain tests, we don't want to trigger
+  // OutputSurface creation.
+  if (compositor_never_visible_ || !RenderThreadImpl::current())
+    compositor_->SetNeverVisible();
+
   StartCompositor();
 }
 
@@ -2168,15 +2174,8 @@ void RenderWidget::didOverscroll(
 }
 
 void RenderWidget::StartCompositor() {
-  // For widgets that are never visible, we don't need the compositor to run
-  // at all.
-  if (never_visible_)
-    return;
-  // In tests without a RenderThreadImpl, don't set ready as this kicks
-  // off creating output surfaces that the test can't create.
-  if (!RenderThreadImpl::current())
-    return;
-  compositor_->StartCompositor();
+  if (!is_hidden())
+    compositor_->setVisible(true);
 }
 
 void RenderWidget::SchedulePluginMove(const WebPluginGeometry& move) {