Remove NOTIFICATION_HISTORY_URLS_DELETED

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