cast: support cursor rendering for tab capture

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 96cfc510dc14128fa6a06fa56334fd0c15fa7418..76ee64e8ae0c90067fc272376e472d47898d36fc 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -1107,9 +1107,9 @@ void RenderWidgetHostViewAura::CopyFromCompositingSurface(
 }
 
 void RenderWidgetHostViewAura::CopyFromCompositingSurfaceToVideoFrame(
-      const gfx::Rect& src_subrect,
-      const scoped_refptr<media::VideoFrame>& target,
-      const base::Callback<void(bool)>& callback) {
+    const gfx::Rect& src_subrect,
+    const scoped_refptr<media::VideoFrame>& target,
+    const base::Callback<void(gfx::Rect, bool)>& callback) {
   delegated_frame_host_->CopyFromCompositingSurfaceToVideoFrame(
       src_subrect, target, callback);
 }
@@ -2812,6 +2812,11 @@ ui::Layer* RenderWidgetHostViewAura::DelegatedFrameHostGetLayer() const {
   return window_->layer();
 }
 
+aura::Window* RenderWidgetHostViewAura::DelegatedFrameHostGetNativeView()
+    const {
+  return window_;
+}
+
 bool RenderWidgetHostViewAura::DelegatedFrameHostIsVisible() const {
   return !host_->is_hidden();
 }