Add support for AMD to the extensions module system.

extensions/renderer/resources/entry_id_manager.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.
 
-var fileSystemNatives = requireNative('file_system_natives');
+define('entryIdManager', [
+    'file_system_natives',
+    'string',
+], function(fileSystemNatives, $String) {
+  var nameToIds = {};
+  var idsToEntries = {};
 
-var nameToIds = {};
-var idsToEntries = {};
+  function computeName(entry) {
+    return entry.filesystem.name + ':' + entry.fullPath;
+  }
 
-function computeName(entry) {
-  return entry.filesystem.name + ':' + entry.fullPath;
-}
+  function computeId(entry) {
+    var fileSystemId = fileSystemNatives.CrackIsolatedFileSystemName(
+        entry.filesystem.name);
+    if (!fileSystemId)
+      return null;
+    // Strip the leading '/' from the path.
+    return fileSystemId + ':' + $String.slice(entry.fullPath, 1);
+  }
 
-function computeId(entry) {
-  var fileSystemId = fileSystemNatives.CrackIsolatedFileSystemName(
-      entry.filesystem.name);
-  if (!fileSystemId)
-    return null;
-  // Strip the leading '/' from the path.
-  return fileSystemId + ':' + $String.slice(entry.fullPath, 1);
-}
+  function registerEntry(id, entry) {
+    var name = computeName(entry);
+    nameToIds[name] = id;
+    idsToEntries[id] = entry;
+  }
 
-function registerEntry(id, entry) {
-  var name = computeName(entry);
-  nameToIds[name] = id;
-  idsToEntries[id] = entry;
-}
+  function getEntryId(entry) {
+    var name = null;
+    try {
+      name = computeName(entry);
+    } catch(e) {
+      return null;
+    }
+    var id = nameToIds[name];
+    if (id != null)
+      return id;
 
-function getEntryId(entry) {
-  var name = null;
-  try {
-    name = computeName(entry);
-  } catch(e) {
-    return null;
+    // If an entry has not been registered, compute its id and register it.
+    id = computeId(entry);
+    registerEntry(id, entry);
+    return id;
   }
-  var id = nameToIds[name];
-  if (id != null)
-    return id;
 
-  // If an entry has not been registered, compute its id and register it.
-  id = computeId(entry);
-  registerEntry(id, entry);
-  return id;
-}
+  function getEntryById(id) {
+    return idsToEntries[id];
+  }
 
-function getEntryById(id) {
-  return idsToEntries[id];
-}
-
-exports.registerEntry = registerEntry;
-exports.getEntryId = getEntryId;
-exports.getEntryById = getEntryById;
+  return {
+    registerEntry: registerEntry,
+    getEntryId: getEntryId,
+    getEntryById: getEntryById,
+  };
+});