Move some extensions renderer resources to extensions_renderer_resources.grd.

extensions/renderer/resources/uncaught_exception_handler.js

 // Copyright 2014 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.
 
 // Handles uncaught exceptions thrown by extensions. By default this is to
 // log an error message, but tests may override this behaviour.
 
 var handler = function(message, e) {
   console.error(message);
 };
 
 // |message| The message associated with the error.
 // |e|       The object that was thrown.
 exports.handle = function(message, e) {
   handler(message, e);
 };
 
 // |newHandler| A function which matches |exports.handle|.
 exports.setHandler = function(newHandler) {
   handler = newHandler;
 };