Move browsing_data_helper files into a separate directory.

chrome/browser/browsing_data/mock_browsing_data_database_helper.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/mock_browsing_data_database_helper.h"
+#include "chrome/browser/browsing_data/mock_browsing_data_database_helper.h"
 
 #include "base/callback.h"
 
 MockBrowsingDataDatabaseHelper::MockBrowsingDataDatabaseHelper(
     Profile* profile)
     : BrowsingDataDatabaseHelper(profile) {
 }
 
 MockBrowsingDataDatabaseHelper::~MockBrowsingDataDatabaseHelper() {
 }
@@ skipping 35 matching lines @@
     i->second = true;
 }
 
 bool MockBrowsingDataDatabaseHelper::AllDeleted() {
   for (std::map<const std::string, bool>::const_iterator i = databases_.begin();
        i != databases_.end(); ++i)
     if (i->second)
       return false;
   return true;
 }