Canvas capture from inactive tab

content/renderer/media/canvas_capture_handler.h

Index: content/renderer/media/canvas_capture_handler.h
diff --git a/content/renderer/media/canvas_capture_handler.h b/content/renderer/media/canvas_capture_handler.h
index c9aa31372d4b90185a702843e51aefbaf7a4ef7a..98aba7a17c7648dd3901fb579a3d6a43d7498d27 100644
--- a/content/renderer/media/canvas_capture_handler.h
+++ b/content/renderer/media/canvas_capture_handler.h
@@ -13,6 +13,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "content/common/content_export.h"
+#include "content/renderer/render_view_impl.h"
 #include "media/base/video_capturer_source.h"
 #include "media/base/video_frame_pool.h"
 #include "third_party/WebKit/public/platform/WebCanvasCaptureHandler.h"
@@ -80,6 +81,8 @@ class CONTENT_EXPORT CanvasCaptureHandler final
   // Destroyed on |frame_callback_task_runner_| after the class is destroyed.
   class CanvasCaptureHandlerDelegate;
 
+  RenderViewImpl* render_view_;
+
   media::VideoCaptureFormat capture_format_;
   bool ask_for_new_frame_;
 
@@ -90,6 +93,10 @@ class CONTENT_EXPORT CanvasCaptureHandler final
   SkImageInfo image_info_;
   media::VideoFramePool frame_pool_;
 
+  // Keeps track of the capture count increment. Safe to use a boolean
+  // since the methods are single threaded.
+  bool capturer_count_incremented_;
+
   const scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
   scoped_ptr<CanvasCaptureHandlerDelegate> delegate_;
   // Bound to the main render thread.