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

chrome/common/important_file_writer.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/common/important_file_writer.h"
 
 #include <stdio.h>
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "base/metrics/histogram.h"
 #include "base/string_number_conversions.h"
-#include "base/task.h"
 #include "base/threading/thread.h"
 #include "base/time.h"
 
 using base::TimeDelta;
 
 namespace {
 
 const int kDefaultCommitIntervalMs = 10000;
 
 enum TempFileFailure {
@@ skipping 120 matching lines @@
   DCHECK(serializer_);
   std::string data;
   if (serializer_->SerializeData(&data)) {
     WriteNow(data);
   } else {
     DLOG(WARNING) << "failed to serialize data to be saved in "
                   << path_.value();
   }
   serializer_ = NULL;
 }