Plumb SetVisible from ui::Compositor to the DirectRenderer.

ui/compositor/test/test_compositor_host_x11.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 "ui/compositor/test/test_compositor_host.h"
 
 #include <X11/Xlib.h>
 
 #include <memory>
 
@@ skipping 58 matching lines @@
   XMapWindow(display, window_);
 
   while (1) {
     XEvent event;
     XNextEvent(display, &event);
     if (event.type == MapNotify && event.xmap.window == window_)
       break;
   }
   compositor_.SetAcceleratedWidget(window_);
   compositor_.SetScaleAndSize(1.0f, bounds_.size());
+  compositor_.SetVisible(true);
 }
 
 ui::Compositor* TestCompositorHostX11::GetCompositor() {
   return &compositor_;
 }
 
 // static
 TestCompositorHost* TestCompositorHost::Create(
     const gfx::Rect& bounds,
     ui::ContextFactory* context_factory) {
   return new TestCompositorHostX11(bounds, context_factory);
 }
 
 }  // namespace ui