Remove task.h and finish base::Bind() migration.

chrome/service/cloud_print/cloud_print_helpers.cc

 // Copyright (c) 2011 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 "chrome/service/cloud_print/cloud_print_helpers.h"
 
 #include "base/json/json_reader.h"
 #include "base/md5.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/rand_util.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
-#include "base/task.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/service/cloud_print/cloud_print_consts.h"
 #include "chrome/service/cloud_print/cloud_print_token_store.h"
 #include "chrome/service/service_process.h"
 
 std::string StringFromJobStatus(cloud_print::PrintJobStatus status) {
   std::string ret;
   switch (status) {
     case cloud_print::PRINT_JOB_STATUS_IN_PROGRESS:
@@ skipping 253 matching lines @@
     LOG(ERROR) << "CP_PROXY: Missing OAuth token for request";
   }
 
   if (token_store) {
     header = "Authorization: OAuth ";
     header += token_store->token();
   }
   return header;
 }