Add the ability to check the CSD Whitelist asynchronously, for PhishGuard.

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 409 matching lines @@
 
 bool LocalSafeBrowsingDatabaseManager::MatchMalwareIP(
     const std::string& ip_address) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (!enabled_ || !enable_ip_blacklist_ || !MakeDatabaseAvailable()) {
     return false;  // Fail open.
   }
   return database_->ContainsMalwareIP(ip_address);
 }
 
+AsyncMatch LocalSafeBrowsingDatabaseManager::CheckCsdWhitelistUrl(
+    const GURL& url,
+    Client* Client) {
+  // Pver3 DB does not support actual partial-hash whitelists, so we emulate
+  // it.  All this code will go away soon (~M62).
+  return (MatchCsdWhitelistUrl(url) ? AsyncMatch::MATCH : AsyncMatch::NO_MATCH);
+}
+
 bool LocalSafeBrowsingDatabaseManager::MatchCsdWhitelistUrl(const GURL& url) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (!enabled_ || !enable_csd_whitelist_ || !MakeDatabaseAvailable()) {
     // There is something funky going on here -- for example, perhaps the user
     // has not restarted since enabling metrics reporting, so we haven't
     // enabled the csd whitelist yet.  Just to be safe we return true in this
     // case.
     return true;
   }
   return database_->ContainsCsdWhitelistedUrl(url);
@@ skipping 814 matching lines @@
       base::BindOnce(&LocalSafeBrowsingDatabaseManager::TimeoutCallback,
                      check_ptr->weak_ptr_factory_->GetWeakPtr(), check_ptr),
       check_timeout_);
 }
 
 bool LocalSafeBrowsingDatabaseManager::IsDownloadProtectionEnabled() const {
   return enable_download_protection_;
 }
 
 }  // namespace safe_browsing