Make content_shell handle renderers going away. I've made TabContents call TabContentsView::OnTab...

content/browser/tab_contents/tab_contents.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/browser/tab_contents/tab_contents.h"
 
 #include <cmath>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 1424 matching lines @@
                                  base::TerminationStatus status,
                                  int error_code) {
   if (rvh != render_view_host()) {
     // The pending page's RenderViewHost is gone.
     return;
   }
 
   SetIsLoading(false, NULL);
   NotifyDisconnected();
   SetIsCrashed(status, error_code);
+  view()->OnTabCrashed(crashed_status(), crashed_error_code());
 
   FOR_EACH_OBSERVER(TabContentsObserver, observers_, RenderViewGone());
 }
 
 void TabContents::RenderViewDeleted(RenderViewHost* rvh) {
   render_manager_.RenderViewDeleted(rvh);
 }
 
 void TabContents::DidNavigate(RenderViewHost* rvh,
                               const ViewHostMsg_FrameNavigate_Params& params) {
@@ skipping 496 matching lines @@
 }
 
 void TabContents::SwapInRenderViewHost(RenderViewHost* rvh) {
   render_manager_.SwapInRenderViewHost(rvh);
 }
 
 void TabContents::CreateViewAndSetSizeForRVH(RenderViewHost* rvh) {
   RenderWidgetHostView* rwh_view = view()->CreateViewForWidget(rvh);
   rwh_view->SetSize(view()->GetContainerSize());
 }