Notifying the Out of Process Renderer about Visibility Change of a Remote Frame

content/browser/frame_host/render_widget_host_view_child_frame.h

 // Copyright 2014 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 CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "cc/resources/returned_resource.h"
 #include "cc/surfaces/surface_factory_client.h"
@@ skipping 141 matching lines @@
 
   // cc::SurfaceFactoryClient implementation.
   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
   void SetBeginFrameSource(cc::SurfaceId surface_id,
                            cc::BeginFrameSource* begin_frame_source) override;
 
   // Declared 'public' instead of 'protected' here to allow derived classes
   // to Bind() to it.
   void SurfaceDrawn(uint32 output_surface_id, cc::SurfaceDrawStatus drawn);
 
+  // Called when the visibility is changed at the renderer side.
+  void SetVisibility(bool visible);
+
  protected:
   friend class RenderWidgetHostView;
   friend class RenderWidgetHostViewChildFrameTest;
   friend class RenderWidgetHostViewGuestSurfaceTest;
 
   // Clears current compositor surface, if one is in use.
   void ClearCompositorSurfaceIfNecessary();
 
   // The last scroll offset of the view.
   gfx::Vector2dF last_scroll_offset_;
@@ skipping 25 matching lines @@
   }
 
  private:
   base::WeakPtrFactory<RenderWidgetHostViewChildFrame> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewChildFrame);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_