cast: support cursor rendering for tab capture

content/browser/renderer_host/render_widget_host_view_mac.mm

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #import <objc/runtime.h>
 #include <OpenGL/gl.h>
 #include <QuartzCore/QuartzCore.h>
 
@@ skipping 1293 matching lines @@
     const gfx::Rect& src_subrect,
     const gfx::Size& dst_size,
     const ReadbackRequestCallback& callback,
     const SkColorType preferred_color_type) {
   DCHECK(delegated_frame_host_);
   delegated_frame_host_->CopyFromCompositingSurface(
       src_subrect, dst_size, callback, preferred_color_type);
 }
 
 void RenderWidgetHostViewMac::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(const gfx::Rect&, bool)>& callback) {
   DCHECK(delegated_frame_host_);
   delegated_frame_host_->CopyFromCompositingSurfaceToVideoFrame(
       src_subrect, target, callback);
 }
 
 bool RenderWidgetHostViewMac::CanCopyToVideoFrame() const {
   DCHECK(delegated_frame_host_);
   return delegated_frame_host_->CanCopyToVideoFrame();
 }
 
@@ skipping 2162 matching lines @@
 
 // "-webkit-app-region: drag | no-drag" is implemented on Mac by excluding
 // regions that are not draggable. (See ControlRegionView in
 // native_app_window_cocoa.mm). This requires the render host view to be
 // draggable by default.
 - (BOOL)mouseDownCanMoveWindow {
   return YES;
 }
 
 @end