Tab Capture: Backing store readbacks to YV12 VideoFrames.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index 8f993225e3a2fc447f714c2024bdc9cebccd048d..fb7ad79d337b21a2e8dc88db7555638a34d33e59 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -757,6 +757,18 @@ void RenderWidgetHostViewAura::CopyFromCompositingSurface(
       wrapper_callback);
 }
 
+void RenderWidgetHostViewAura::CopyFromCompositingSurfaceToVideoFrame(
+      const gfx::Rect& src_subrect,
+      const scoped_refptr<media::VideoFrame>& target,
+      const base::Callback<void(bool)>& callback) {
+  NOTIMPLEMENTED();
+  callback.Run(false);
+}
+
+bool RenderWidgetHostViewAura::CanCopyToVideoFrame() const {
+  return false;
+}
+
 void RenderWidgetHostViewAura::OnAcceleratedCompositingStateChange() {
   // Delay processing the state change until we either get a software frame if
   // switching to software mode or receive a buffers swapped notification