VDA: Don't wait for the VSyncProvider in headless mode

content/common/gpu/media/rendering_helper.h

 // Copyright (c) 2012 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_COMMON_GPU_MEDIA_RENDERING_HELPER_H_
 #define CONTENT_COMMON_GPU_MEDIA_RENDERING_HELPER_H_
 
 #include <map>
 #include <queue>
 #include <vector>
@@ skipping 179 matching lines @@
 
 #if defined(USE_OZONE)
   class StubOzoneDelegate;
   scoped_ptr<StubOzoneDelegate> platform_window_delegate_;
 
 #if defined(OS_CHROMEOS)
   scoped_ptr<ui::DisplayConfigurator> display_configurator_;
 #endif
 #endif
 
+  bool ignore_vsync_;
+
   gfx::AcceleratedWidget window_;
 
   gfx::Size screen_size_;
 
   std::vector<RenderedVideo> videos_;
 
   bool render_as_thumbnails_;
   int frame_count_;
   GLuint thumbnails_fbo_id_;
   GLuint thumbnails_texture_id_;
   gfx::Size thumbnails_fbo_size_;
   gfx::Size thumbnail_size_;
   GLuint program_;
   base::TimeDelta frame_duration_;
   base::TimeTicks scheduled_render_time_;
   base::CancelableClosure render_task_;
   base::TimeTicks vsync_timebase_;
   base::TimeDelta vsync_interval_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderingHelper);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_RENDERING_HELPER_H_