Add a Print() method to bindings JS for last resort debugging.

chrome/renderer/resources/renderer_extension_bindings.js

 // Copyright (c) 2011 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.
 
 // This script contains unprivileged javascript APIs related to chrome
 // extensions.  It is loaded by any extension-related context, such as content
 // scripts or toolstrips.
 // See user_script_slave.cc for script that is loaded by content scripts only.
 // TODO(mpcomplete): we also load this in regular web pages, but don't need to.
 
 var chrome = chrome || {};
 (function () {
   native function OpenChannelToExtension(sourceId, targetId, name);
   native function CloseChannel(portId, notifyBrowser);
   native function PortAddRef(portId);
   native function PortRelease(portId);
   native function PostMessage(portId, msg);
   native function GetChromeHidden();
   native function GetL10nMessage();
+  native function Print();
 
   var chromeHidden = GetChromeHidden();
 
   // The reserved channel name for the sendRequest API.
   chromeHidden.kRequestChannel = "chrome.extension.sendRequest";
 
   // Map of port IDs to port object.
   var ports = {};
 
   // Map of port IDs to chromeHidden.onUnload listeners. Keep track of these
@@ skipping 321 matching lines @@
       "extension.onRequestExternal",
       "extension.setUpdateUrlData",
       "i18n.getAcceptLanguages"
     ];
     for (var i = 0; i < privileged.length; i++) {
       createStub(privileged[i]);
     }
   }
 
 })();