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

chrome/browser/extensions/settings/settings_storage_quota_enforcer.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/browser/extensions/settings/settings_storage_quota_enforcer.h"
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
-#include "base/task.h"
 
 namespace extensions {
 
 namespace {
 
 const char* kExceededQuotaErrorMessage = "Quota exceeded";
 
 // Resources there are a quota for.
 enum Resource {
   TOTAL_BYTES,
@@ skipping 181 matching lines @@
     return result;
   }
 
   while (!used_per_setting_.empty()) {
     Free(&used_total_, &used_per_setting_, used_per_setting_.begin()->first);
   }
   return result;
 }
 
 }  // namespace extensions