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

chrome/browser/renderer_host/render_widget_host_view_mac.mm

 // Copyright (c) 2010 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 <QuartzCore/QuartzCore.h>
 
 #include "chrome/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include "app/app_switches.h"
 #include "app/surface/io_surface_support_mac.h"
@@ skipping 718 matching lines @@
   }
 
   // If |about_to_validate_and_paint_| is set, then -drawRect: is on the stack
   // and it's not allowed to call -setHidden on the accelerated view.  In that
   // case, -callSetNeedsDisplayInRect: will hide it later.
   // If |about_to_validate_and_paint_| is not set, do it now.
   if (!about_to_validate_and_paint_)
     HandleDelayedGpuViewHiding();
 }
 
-void RenderWidgetHostViewMac::RenderViewGone() {
+void RenderWidgetHostViewMac::RenderViewGone(base::TerminationStatus status,
+                                             int error_code) {
   // TODO(darin): keep this around, and draw sad-tab into it.
   UpdateCursorIfOverSelf();
   Destroy();
 }
 
 void RenderWidgetHostViewMac::Destroy() {
   // On Windows, popups are implemented with a popup window style, so that when
   // an event comes in that would "cancel" it, it receives the OnCancelMode
   // message and can kill itself. Alas, on the Mac, views cannot capture events
   // outside of themselves. On Windows, if Destroy is being called on a view,
@@ skipping 1818 matching lines @@
   if (!string) return NO;
 
   // If the user is currently using an IME, confirm the IME input,
   // and then insert the text from the service, the same as TextEdit and Safari.
   [self confirmComposition];
   [self insertText:string];
   return YES;
 }
 
 @end