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

chrome/browser/in_process_webkit/indexed_db_key_utility_client.h

 // 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.
 
 #ifndef CHROME_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_KEY_UTILITY_CLIENT_H_
 #define CHROME_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_KEY_UTILITY_CLIENT_H_
 #pragma once
 
 #include "base/ref_counted.h"
 #include "base/waitable_event.h"
@@ skipping 27 matching lines @@
       const std::vector<SerializedScriptValue>& values,
       const string16& key_path,
       std::vector<IndexedDBKey>* keys);
 
  private:
   class Client : public UtilityProcessHost::Client {
    public:
     explicit Client(IndexedDBKeyUtilityClient* parent);
 
     // UtilityProcessHost::Client
-    virtual void OnProcessCrashed();
+    virtual void OnProcessCrashed(int exit_code);
     virtual void OnIDBKeysFromValuesAndKeyPathSucceeded(
         int id, const std::vector<IndexedDBKey>& keys);
     virtual void OnIDBKeysFromValuesAndKeyPathFailed(int id);
 
    private:
     IndexedDBKeyUtilityClient* parent_;
 
     DISALLOW_COPY_AND_ASSIGN(Client);
   };
 
@@ skipping 24 matching lines @@
   std::vector<IndexedDBKey> keys_;
 
   // Used in the IO thread.
   UtilityProcessHost* utility_process_host_;
   scoped_refptr<Client> client_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBKeyUtilityClient);
 };
 
 #endif  // CHROME_BROWSER_IN_PROCESS_WEBKIT_INDEXED_DB_KEY_UTILITY_CLIENT_H_