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

chrome/browser/renderer_host/render_widget_host_view_mac.mm

Index: chrome/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/chrome/browser/renderer_host/render_widget_host_view_mac.mm b/chrome/browser/renderer_host/render_widget_host_view_mac.mm
index 8cb6fc3eebda482d3631b0c129a1302167473d55..d8c41fc77f20da19536582f75db92cd57ecd71f8 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/chrome/browser/renderer_host/render_widget_host_view_mac.mm
@@ -794,7 +794,8 @@ void RenderWidgetHostViewMac::DidUpdateBackingStore(
     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();