Fix shutdown crash when WebMediaPlayerImpl is destroyed after RenderViewImpl is.

content/renderer/render_view_impl.cc

 // Copyright (c) 2011 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/renderer/render_view_impl.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 1929 matching lines @@
 
   scoped_refptr<webkit_glue::WebVideoRenderer> video_renderer;
   bool pts_logging = cmd_line->HasSwitch(switches::kEnableVideoLogging);
   scoped_refptr<webkit_glue::VideoRendererImpl> renderer(
       new webkit_glue::VideoRendererImpl(pts_logging));
   collection->AddVideoRenderer(renderer);
   video_renderer = renderer;
 
   scoped_ptr<webkit_glue::WebMediaPlayerImpl> result(
       new webkit_glue::WebMediaPlayerImpl(client,
-                                          this,
+                                          AsWeakPtr(),
                                           collection.release(),
                                           message_loop_factory.release(),
                                           media_stream_impl_.get(),
                                           new RenderMediaLog()));
   if (!result->Initialize(frame,
                           cmd_line->HasSwitch(switches::kSimpleDataSource),
                           video_renderer)) {
     return NULL;
   }
   return result.release();
@@ skipping 2676 matching lines @@
 
 bool RenderViewImpl::WebWidgetHandlesCompositorScheduling() const {
   return webview()->settings()->useThreadedCompositor();
 }
 
 void RenderViewImpl::OnJavaBridgeInit(
     const IPC::ChannelHandle& channel_handle) {
   DCHECK(!java_bridge_dispatcher_.get());
   java_bridge_dispatcher_.reset(new JavaBridgeDispatcher(this, channel_handle));
 }