bookmarks: Get rid of the dependency on history_notifications.h

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 {
 
 URLVisitedDetails::URLVisitedDetails()
     : transition(content::PAGE_TRANSITION_LINK) {}
 
 URLVisitedDetails::~URLVisitedDetails() {}
 
 URLsModifiedDetails::URLsModifiedDetails() {}
 
 URLsModifiedDetails::~URLsModifiedDetails() {}
 
 URLsDeletedDetails::URLsDeletedDetails()
     : all_history(false),
       archived(false) {
 }
 
 URLsDeletedDetails::~URLsDeletedDetails() {}
 
-FaviconChangeDetails::FaviconChangeDetails() {}
-
-FaviconChangeDetails::~FaviconChangeDetails() {}
-
 KeywordSearchTermDetails::KeywordSearchTermDetails() : keyword_id(0) {}
 
 KeywordSearchTermDetails::~KeywordSearchTermDetails() {}
 
 }  // namespace history