Split to SafeBrowsingDatabaseManager into Local* and Remote*.

build/config/BUILD.gn

Index: build/config/BUILD.gn
diff --git a/build/config/BUILD.gn b/build/config/BUILD.gn
index 1bd666bd24cf4ba09239420e5c109aee50126089..c6e7bfe9938eeb504b95de2304efd9046f8a10a7 100644
--- a/build/config/BUILD.gn
+++ b/build/config/BUILD.gn
@@ -238,6 +238,10 @@ config("feature_flags") {
   } else if (safe_browsing_mode == 2) {
     defines += [ "MOBILE_SAFE_BROWSING" ]
     defines += [ "SAFE_BROWSING_SERVICE" ]
+  } else if (safe_browsing_mode == 3) {
+    defines += [ "MOBILE_SAFE_BROWSING" ]
+    defines += [ "SAFE_BROWSING_DB_REMOTE" ]
+    defines += [ "SAFE_BROWSING_SERVICE" ]
   }
 }