Revert 274558 "Move some extensions renderer resources to extens..."

trunk/src/extensions/renderer/resources/messaging_utils.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.
-
-// Routines used to normalize arguments to messaging functions.
-
-function alignSendMessageArguments(args, hasOptionsArgument) {
-  // Align missing (optional) function arguments with the arguments that
-  // schema validation is expecting, e.g.
-  //   extension.sendRequest(req)     -> extension.sendRequest(null, req)
-  //   extension.sendRequest(req, cb) -> extension.sendRequest(null, req, cb)
-  if (!args || !args.length)
-    return null;
-  var lastArg = args.length - 1;
-
-  // responseCallback (last argument) is optional.
-  var responseCallback = null;
-  if (typeof args[lastArg] == 'function')
-    responseCallback = args[lastArg--];
-
-  var options = null;
-  if (hasOptionsArgument && lastArg >= 1) {
-    // options (third argument) is optional. It can also be ambiguous which
-    // argument it should match. If there are more than two arguments remaining,
-    // options is definitely present:
-    if (lastArg > 1) {
-      options = args[lastArg--];
-    } else {
-      // Exactly two arguments remaining. If the first argument is a string,
-      // it should bind to targetId, and the second argument should bind to
-      // request, which is required. In other words, when two arguments remain,
-      // only bind options when the first argument cannot bind to targetId.
-      if (!(args[0] === null || typeof args[0] == 'string'))
-        options = args[lastArg--];
-    }
-  }
-
-  // request (second argument) is required.
-  var request = args[lastArg--];
-
-  // targetId (first argument, extensionId in the manifest) is optional.
-  var targetId = null;
-  if (lastArg >= 0)
-    targetId = args[lastArg--];
-
-  if (lastArg != -1)
-    return null;
-  if (hasOptionsArgument)
-    return [targetId, request, options, responseCallback];
-  return [targetId, request, responseCallback];
-}
-
-exports.alignSendMessageArguments = alignSendMessageArguments;