Split to SafeBrowsingDatabaseManager into Local* and Remote*.

build/config/features.gni

 # Copyright 2014 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 contains UI-related build flags. It should theoretically be in the
 # src/ui directory and only things that depend on the ui module should get the
 # definitions.
 #
 # However, today we have many "bad" dependencies on some of these flags from,
 # e.g. base, so they need to be global.
@@ skipping 116 matching lines @@
 
 # TODO(brettw) this should be moved to net and only dependents get this define.
 disable_ftp_support = is_ios
 
 enable_web_speech = !is_android && !is_ios
 
 use_dbus = is_linux
 
 enable_extensions = !is_android && !is_ios
 
-# Variable safe_browsing is used to control the build time configuration for
-# safe browsing feature. Safe browsing can be compiled in 3 different levels: 0
-# disables it, 1 enables it fully, and 2 enables only UI and reporting features
-# without enabling phishing and malware detection. This is useful to integrate
-# a third party phishing/malware detection to existing safe browsing logic.
+# Variable safe_browsing is used to control the build time configuration
+# for safe browsing feature. Safe browsing can be compiled in 4 different
+# levels: 0 disables it, 1 enables it fully, and 2 enables only UI and
+# reporting features for use with Data Saver on Mobile, and 3 enables
+# extended mobile protection via an external API.  When 3 is fully deployed,
+# it will replace 2.
 if (is_android) {
   safe_browsing_mode = 2
 } else if (is_ios) {
   safe_browsing_mode = 0
 } else {
   safe_browsing_mode = 1
 }
 
 enable_task_manager = !is_ios && !is_android
 
@@ skipping 31 matching lines @@
 # TODO(GYP) also require !embedded to enable.
 use_gconf = is_linux && !is_chromeos
 
 # Hangout services is an extension that adds extra features to Hangouts.
 # For official GYP builds, this flag is set, it will likely need to be
 # parameterized in the future for a similar use.
 enable_hangout_services_extension = false
 
 # Whether to back up data before sync.
 enable_pre_sync_backup = is_win || is_mac || (is_linux && !is_chromeos)