Plumb SetVisible from ui::Compositor to the DirectRenderer.

cc/surfaces/display.cc

Index: cc/surfaces/display.cc
diff --git a/cc/surfaces/display.cc b/cc/surfaces/display.cc
index 9ded1a21c70bea9d719ff78c4395aef634831384..5589d21b24b24b5d80b8ec75a9b56f87d69c12d0 100644
--- a/cc/surfaces/display.cc
+++ b/cc/surfaces/display.cc
@@ -104,6 +104,12 @@ void Display::SetSurfaceId(const SurfaceId& id, float device_scale_factor) {
     scheduler_->SetNewRootSurface(id);
 }
 
+void Display::SetVisible(bool visible) {
+  TRACE_EVENT1("cc", "Display::SetVisible", "visible", visible);
+  renderer_->SetVisible(visible);
+  // TODO(danakj): Could tell DisplayScheduler about the visiblity.
+}
+
 void Display::Resize(const gfx::Size& size) {
   if (size == current_surface_size_)
     return;