Removed "compositor" child window that was created by the GPU process.

content/browser/tab_contents/tab_contents.cc

Index: content/browser/tab_contents/tab_contents.cc
===================================================================
--- content/browser/tab_contents/tab_contents.cc	(revision 83213)
+++ content/browser/tab_contents/tab_contents.cc	(working copy)
@@ -2273,12 +2273,12 @@
     RenderViewHost* render_view_host) {
   RenderWidgetHostView* rwh_view = view_->CreateViewForWidget(render_view_host);
 
+  // Now that the RenderView has been created, we need to tell it its size.
+  rwh_view->SetSize(view_->GetContainerSize());
+
   if (!render_view_host->CreateRenderView(string16()))
     return false;
 
-  // Now that the RenderView has been created, we need to tell it its size.
-  rwh_view->SetSize(view_->GetContainerSize());
-
   UpdateMaxPageIDIfNecessary(render_view_host->site_instance(),
                              render_view_host);
   return true;