Add UMA metrics for the time it takes to read store from disk and apply update

chrome/browser/safe_browsing/local_database_manager.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/safe_browsing/local_database_manager.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/bind.h"
@@ skipping 1198 matching lines @@
 }
 
 void LocalSafeBrowsingDatabaseManager::SafeBrowsingCheckDone(
     SafeBrowsingCheck* check) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK(check);
 
   if (!enabled_)
     return;
 
-  DVLOG(1) << "SafeBrowsingCheckDone";
   DCHECK(checks_.find(check) != checks_.end());
   if (check->client)
     check->OnSafeBrowsingResult();
   checks_.erase(check);
   delete check;
 }
 
 void LocalSafeBrowsingDatabaseManager::StartSafeBrowsingCheck(
     SafeBrowsingCheck* check,
     const base::Callback<std::vector<SBPrefix>(void)>& task) {
@@ skipping 10 matching lines @@
       FROM_HERE, base::Bind(&LocalSafeBrowsingDatabaseManager::TimeoutCallback,
                             check->weak_ptr_factory_->GetWeakPtr(), check),
       check_timeout_);
 }
 
 bool LocalSafeBrowsingDatabaseManager::IsDownloadProtectionEnabled() const {
   return enable_download_protection_;
 }
 
 }  // namespace safe_browsing