Eliminate sending NOTIFICATION_HISTORY_KEYWORD_SEARCH_TERM_UPDATED

chrome/browser/history/history_notifications.cc

 // Copyright (c) 2012 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_notifications.h"
 
 namespace history {
 
 URLsModifiedDetails::URLsModifiedDetails() {}
 
 URLsModifiedDetails::~URLsModifiedDetails() {}
 
 URLsDeletedDetails::URLsDeletedDetails()
     : all_history(false),
       expired(false) {
 }
 
 URLsDeletedDetails::~URLsDeletedDetails() {}
 
-KeywordSearchUpdatedDetails::KeywordSearchUpdatedDetails(
-    const URLRow& url_row,
-    KeywordID keyword_id,
-    const base::string16& term)
-    : url_row(url_row),
-      keyword_id(keyword_id),
-      term(term) {
-}
-
-KeywordSearchUpdatedDetails::~KeywordSearchUpdatedDetails() {}
-
 KeywordSearchDeletedDetails::KeywordSearchDeletedDetails(URLID url_row_id)
     : url_row_id(url_row_id) {
 }
 
 KeywordSearchDeletedDetails::~KeywordSearchDeletedDetails() {}
 
 }  // namespace history