Remove HistoryPublisher code.

chrome/browser/history/history_publisher_none.cc

-// Copyright (c) 2009 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.
-
-// A stub implementation of HistoryPublisher used to provide needed symbols.
-// For now there is no equivalent of this functionality on systems other than
-// Windows.
-
-#include "chrome/browser/history/history_publisher.h"
-
-#include "base/time/time.h"
-
-namespace history {
-
-HistoryPublisher::HistoryPublisher() {
-}
-
-HistoryPublisher::~HistoryPublisher() {
-}
-
-bool HistoryPublisher::Init() {
-  return false;
-}
-
-void HistoryPublisher::PublishDataToIndexers(const PageData& page_data)
-    const {
-}
-
-}  // namespace history