services/ui: Detect when a video is playing

services/ui/ws/server_window_surface.h

 // Copyright 2015 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_SERVER_WINDOW_SURFACE_H_
 #define SERVICES_UI_WS_SERVER_WINDOW_SURFACE_H_
 
 #include <set>
 
 #include "base/macros.h"
@@ skipping 23 matching lines @@
   ServerWindowSurface(ServerWindowSurfaceManager* manager,
                       mojo::InterfaceRequest<mojom::Surface> request,
                       mojom::SurfaceClientPtr client);
 
   ~ServerWindowSurface() override;
 
   const gfx::Size& last_submitted_frame_size() const {
     return last_submitted_frame_size_;
   }
 
+  bool may_contain_video() const { return may_contain_video_; }
+
   // mojom::Surface:
   void SubmitCompositorFrame(
       cc::CompositorFrame frame,
       const SubmitCompositorFrameCallback& callback) override;
 
   const cc::SurfaceId& id() const { return surface_id_; }
 
   // Destroys old surfaces that have been outdated by a new surface.
   void DestroySurfacesScheduledForDestruction();
 
@@ skipping 11 matching lines @@
   cc::SurfaceId surface_id_;
   cc::SurfaceIdAllocator surface_id_allocator_;
   cc::SurfaceFactory surface_factory_;
 
   mojom::SurfaceClientPtr client_;
   mojo::Binding<Surface> binding_;
 
   // Set of surface ids that need to be destroyed.
   std::set<cc::SurfaceId> surfaces_scheduled_for_destruction_;
 
+  bool may_contain_video_ = false;
+
   DISALLOW_COPY_AND_ASSIGN(ServerWindowSurface);
 };
 
 }  // namespace ws
 
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_SERVER_WINDOW_SURFACE_H_