Clean up paint callbacks in player_x11 to use media::BindToCurrentLoop().

media/tools/player_x11/x11_video_renderer.cc

 // 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 "media/tools/player_x11/x11_video_renderer.h"
 
 #include <dlfcn.h>
 #include <X11/Xutil.h>
 #include <X11/extensions/Xrender.h>
 #include <X11/extensions/Xcomposite.h>
@@ skipping 65 matching lines @@
       use_render_(false) {
 }
 
 X11VideoRenderer::~X11VideoRenderer() {
   if (image_)
     XDestroyImage(image_);
   if (use_render_)
     XRenderFreePicture(display_, picture_);
 }
 
-void X11VideoRenderer::Paint(media::VideoFrame* video_frame) {
+void X11VideoRenderer::Paint(
+    const scoped_refptr<media::VideoFrame>& video_frame) {
   if (!image_)
     Initialize(video_frame->coded_size(), video_frame->visible_rect());
 
   const int coded_width = video_frame->coded_size().width();
   const int coded_height = video_frame->coded_size().height();
   const int visible_width = video_frame->visible_rect().width();
   const int visible_height = video_frame->visible_rect().height();
 
   // Check if we need to reallocate our XImage.
   if (image_->width != coded_width || image_->height != coded_height) {
@@ skipping 108 matching lines @@
 
     XRenderPictFormat* pictformat = XRenderFindVisualFormat(
         display_,
         attr.visual);
     CHECK(pictformat) << "XRender does not support default visual";
 
     picture_ = XRenderCreatePicture(display_, window_, pictformat, 0, NULL);
     CHECK(picture_) << "Backing picture not created";
   }
 }