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

chrome/browser/history/history_extension_api.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/history/history_extension_api.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
-#include "base/task.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/history/history.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_source.h"
 
 namespace {
@@ skipping 370 matching lines @@
       &cancelable_consumer_,
       base::Bind(&DeleteAllHistoryFunction::DeleteComplete,
                  base::Unretained(this)));
 
   return true;
 }
 
 void DeleteAllHistoryFunction::DeleteComplete() {
   SendAsyncResponse();
 }