Convert URLLoader to the new proxy design

ppapi/shared_impl/api_id.h

 // 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.
 
 #ifndef PPAPI_SHARED_IMPL_API_ID_H_
 #define PPAPI_SHARED_IMPL_API_ID_H_
 
 namespace ppapi {
 
 // These numbers must be all small integers. They are used in a lookup table
@@ skipping 28 matching lines @@
   API_ID_PPB_NETWORKMANAGER_PRIVATE,
   API_ID_PPB_OPENGLES2,
   API_ID_PPB_PDF,
   API_ID_PPB_SURFACE_3D,
   API_ID_PPB_TCPSERVERSOCKET_PRIVATE,
   API_ID_PPB_TCPSOCKET_PRIVATE,
   API_ID_PPB_TALK,
   API_ID_PPB_TESTING,
   API_ID_PPB_TEXT_INPUT,
   API_ID_PPB_UDPSOCKET_PRIVATE,
-  API_ID_PPB_URL_LOADER,
   API_ID_PPB_URL_RESPONSE_INFO,
   API_ID_PPB_VAR_ARRAY_BUFFER,
   API_ID_PPB_VAR_DEPRECATED,
   API_ID_PPB_VIDEO_CAPTURE_DEV,
   API_ID_PPB_VIDEO_DECODER_DEV,
   API_ID_PPB_X509_CERTIFICATE_PRIVATE,
 
   API_ID_PPP_CLASS,
   // TODO(tomfinegan): Remove this after we refactor things to load the PPP
   // interface struct from the PPB interface.
@@ skipping 11 matching lines @@
 
   API_ID_RESOURCE_CREATION,
 
   // Must be last to indicate the number of interface IDs.
   API_ID_COUNT
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_API_ID_H_