| Index: content/browser/renderer_host/render_widget_host_unittest.cc
 | 
| diff --git a/content/browser/renderer_host/render_widget_host_unittest.cc b/content/browser/renderer_host/render_widget_host_unittest.cc
 | 
| index 189cb5f5515f925c489bd3a593d81398f1725f56..fd363bb982f51300ccb170baa0b7220e50f1a39c 100644
 | 
| --- a/content/browser/renderer_host/render_widget_host_unittest.cc
 | 
| +++ b/content/browser/renderer_host/render_widget_host_unittest.cc
 | 
| @@ -96,6 +96,7 @@ void RenderWidgetHostProcess::InitUpdateRectParams(
 | 
|    params->copy_rects.push_back(params->bitmap_rect);
 | 
|    params->view_size = gfx::Size(w, h);
 | 
|    params->flags = update_msg_reply_flags_;
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| +  params->needs_ack = true;
 | 
|  }
 | 
|  
 | 
|  bool RenderWidgetHostProcess::WaitForUpdateMsg(int render_widget_id,
 | 
| 
 |