This adds some plumbing for propagating the reason for a renderer's death

chrome/browser/extensions/extension_host.h

Index: chrome/browser/extensions/extension_host.h
diff --git a/chrome/browser/extensions/extension_host.h b/chrome/browser/extensions/extension_host.h
index d4fcc897be45c13799b2ebbf2d5869b47ff40431..580fad3820b0168ff14c29a64b4f46b81a0ca888 100644
--- a/chrome/browser/extensions/extension_host.h
+++ b/chrome/browser/extensions/extension_host.h
@@ -114,7 +114,9 @@ class ExtensionHost : public RenderViewHostDelegate,
   virtual ViewType::Type GetRenderViewType() const;
   virtual FileSelect* GetFileSelectDelegate();
   virtual int GetBrowserWindowID() const;
-  virtual void RenderViewGone(RenderViewHost* render_view_host);
+  virtual void RenderViewGone(RenderViewHost* render_view_host,
+                              base::TerminationStatus status,
+                              int error_code);
   virtual void DidNavigate(RenderViewHost* render_view_host,
                            const ViewHostMsg_FrameNavigate_Params& params);
   virtual void DidStopLoading();