Reland: Start checking URLs using PVer4. Verdict not returned to client yet.

components/safe_browsing_db/v4_local_database_manager.cc

 // Copyright 2016 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.
 
 // This file should not be build on Android but is currently getting built.
 // TODO(vakh): Fix that: http://crbug.com/621647
 
 #include "components/safe_browsing_db/v4_local_database_manager.h"
 
 #include <vector>
 
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
+#include "base/memory/ref_counted.h"
+#include "components/safe_browsing_db/v4_feature_list.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 namespace safe_browsing {
 
 namespace {
 
 const ThreatSeverity kLeastSeverity =
     std::numeric_limits<ThreatSeverity>::max();
@@ skipping 32 matching lines @@
     : client(client),
       client_callback_type(client_callback_type),
       result_threat_type(SB_THREAT_TYPE_SAFE),
       stores_to_check(stores_to_check),
       url(url) {
   DCHECK_GT(ClientCallbackType::CHECK_MAX, client_callback_type);
 }
 
 V4LocalDatabaseManager::PendingCheck::~PendingCheck() {}
 
+// static
+scoped_refptr<V4LocalDatabaseManager> V4LocalDatabaseManager::Create(
+    const base::FilePath& base_path) {
+  if (!V4FeatureList::IsLocalDatabaseManagerEnabled()) {
+    return nullptr;
+  }
+
+  return make_scoped_refptr(new V4LocalDatabaseManager(base_path));
+}
+
 V4LocalDatabaseManager::V4LocalDatabaseManager(const base::FilePath& base_path)
     : base_path_(base_path), enabled_(false), list_infos_(GetListInfos()) {
   DCHECK(!base_path_.empty());
   DCHECK(!list_infos_.empty());
 
   DVLOG(1) << "V4LocalDatabaseManager::V4LocalDatabaseManager: "
            << "base_path_: " << base_path_.AsUTF8Unsafe();
 }
 
 V4LocalDatabaseManager::~V4LocalDatabaseManager() {
@@ skipping 382 matching lines @@
 }
 
 void V4LocalDatabaseManager::UpdateRequestCompleted(
     std::unique_ptr<ParsedServerResponse> parsed_server_response) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   v4_database_->ApplyUpdate(std::move(parsed_server_response),
                             db_updated_callback_);
 }
 
 }  // namespace safe_browsing