Adds some debugging code in hopes of identifying a crasher.

content/browser/tab_contents/tab_contents_delegate.cc

Index: content/browser/tab_contents/tab_contents_delegate.cc
diff --git a/content/browser/tab_contents/tab_contents_delegate.cc b/content/browser/tab_contents/tab_contents_delegate.cc
index f88e99ebfbbbefb9a19cd23c51a2e0b67bdae000..1bb95f2036a648b0599e82ae00b2806b1a91800a 100644
--- a/content/browser/tab_contents/tab_contents_delegate.cc
+++ b/content/browser/tab_contents/tab_contents_delegate.cc
@@ -10,6 +10,8 @@
 #include "content/browser/javascript_dialogs.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/public/browser/intents_host.h"
+#include "content/public/browser/notification_service.h"
+#include "content/public/browser/notification_types.h"
 #include "content/public/common/url_constants.h"
 #include "ui/gfx/rect.h"
 #include "webkit/glue/web_intent_data.h"
@@ -337,6 +339,10 @@ TabContentsDelegate::~TabContentsDelegate() {
     tab_contents->set_delegate(NULL);
   }
   DCHECK(attached_contents_.empty());
+  content::NotificationService::current()->Notify(
+      content::NOTIFICATION_TAB_CONTENTS_DELEGATE_DESTROYED,
+      content::Source<TabContentsDelegate>(this),
+      content::NotificationService::NoDetails());
 }
 
 void TabContentsDelegate::Attach(TabContents* tab_contents) {