Convert to new enter method

ppapi/thunk/ppb_url_loader_thunk.cc

 // 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.
 
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_errors.h"
-#include "ppapi/thunk/common.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/thunk.h"
 #include "ppapi/thunk/ppb_url_loader_api.h"
 #include "ppapi/thunk/resource_creation_api.h"
 
 namespace ppapi {
 namespace thunk {
 
 namespace {
 
@@ skipping 122 matching lines @@
 const PPB_URLLoader_1_0* GetPPB_URLLoader_1_0_Thunk() {
   return &g_ppb_urlloader_thunk;
 }
 
 const PPB_URLLoaderTrusted_0_3* GetPPB_URLLoaderTrusted_0_3_Thunk() {
   return &g_ppb_urlloader_trusted_thunk;
 }
 
 }  // namespace thunk
 }  // namespace ppapi