Make miscellaneous_bindings.js not depend on onLoad().

chrome/renderer/resources/extensions/miscellaneous_bindings.js

 // Copyright (c) 2012 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 background pages.
 // See user_script_slave.cc for script that is loaded by content scripts only.
 
   require('json_schema');
   require('event_bindings');
   var lastError = require('lastError');
   var miscNatives = requireNative('miscellaneous_bindings');
   var CloseChannel = miscNatives.CloseChannel;
   var PortAddRef = miscNatives.PortAddRef;
   var PortRelease = miscNatives.PortRelease;
   var PostMessage = miscNatives.PostMessage;
   var BindToGC = miscNatives.BindToGC;
 
   var chromeHidden = requireNative('chrome_hidden').GetChromeHidden();
-  var manifestVersion;
-  var extensionId;
+
+  var processNatives = requireNative('process');
+  var manifestVersion = processNatives.GetManifestVersion();
+  var extensionId = processNatives.GetExtensionId();
 
   // The reserved channel name for the sendRequest/sendMessage APIs.
   // Note: sendRequest is deprecated.
   chromeHidden.kRequestChannel = "chrome.extension.sendRequest";
   chromeHidden.kMessageChannel = "chrome.extension.sendMessage";
 
   // Map of port IDs to port object.
   var ports = {};
 
   // Map of port IDs to chromeHidden.onUnload listeners. Keep track of these
@@ skipping 248 matching lines @@
     });
     port.onMessage.addListener(function(response) {
       try {
         responseCallback(response);
       } finally {
         port.disconnect();
         port = null;
       }
     });
   }
-
-  // This function is called on context initialization for both content scripts
-  // and extension contexts.
-  chromeHidden.onLoad.addListener(function(tempExtensionId,
-                                           isExtensionProcess,
-                                           inIncognitoContext,
-                                           tempManifestVersion) {
-    extensionId = tempExtensionId;
-    manifestVersion = tempManifestVersion;
-
-    chrome.extension = chrome.extension || {};
-
-    if (manifestVersion < 2) {
-      chrome.self = chrome.extension;
-      chrome.extension.inIncognitoTab = inIncognitoContext;
-    }
-
-    chrome.extension.inIncognitoContext = inIncognitoContext;
-  });