Mus: Fixes rendering of transparent containers.

services/ui/ws/frame_generator.h

 // Copyright 2016 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.
 
 #ifndef SERVICES_UI_WS_FRAME_GENERATOR_H_
 #define SERVICES_UI_WS_FRAME_GENERATOR_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/timer/timer.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace cc {
 class CompositorFrame;
 class CopyOutputRequest;
 class RenderPass;
 enum class SurfaceDrawStatus;
 }
 
 namespace ui {
 
 class DisplayCompositor;
 class GpuState;
 class SurfacesState;
 
 namespace ws {
 
+namespace test {
+class FrameGeneratorTest;
+}
+
 class FrameGeneratorDelegate;
 class ServerWindow;
 
 // Responsible for redrawing the display in response to the redraw requests by
 // submitting CompositorFrames to the owned DisplayCompositor.
 class FrameGenerator {
  public:
   FrameGenerator(FrameGeneratorDelegate* delegate,
                  scoped_refptr<GpuState> gpu_state,
                  scoped_refptr<SurfacesState> surfaces_state);
   virtual ~FrameGenerator();
 
   // Schedules a redraw for the provided region.
   void RequestRedraw(const gfx::Rect& redraw_region);
   void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget);
   void RequestCopyOfOutput(
       std::unique_ptr<cc::CopyOutputRequest> output_request);
 
   bool is_frame_pending() { return frame_pending_; }
 
  private:
+  friend class ui::ws::test::FrameGeneratorTest;
+
   void WantToDraw();
 
   // This method initiates a top level redraw of the display.
   // TODO(fsamuel): This should use vblank as a signal rather than a timer
   // http://crbug.com/533042
   void Draw();
 
   // This is called after the DisplayCompositor has completed generating a new
   // frame for the display. TODO(fsamuel): Idle time processing should happen
   // here if there is budget for it.
@@ skipping 24 matching lines @@
   base::WeakPtrFactory<FrameGenerator> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameGenerator);
 };
 
 }  // namespace ws
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_FRAME_GENERATOR_H_