Allow toggling the use of local Safe Browsing lists on Android via flags

This is required to allow the test team to toggle the feature.

Bug: 894301
Change-Id: I3dde2b10bb33ae1972fa6091abddd120bc9c357c
Reviewed-on: https://chromium-review.googlesource.com/c/1278151
Reviewed-by: Steven Holte <[email protected]>
Commit-Queue: Varun Khaneja <[email protected]>
Cr-Commit-Position: refs/heads/master@{#599414}
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index b837869c..a4679ca4 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -1613,6 +1613,9 @@
 extern const char kReaderModeInCCTName[];
 extern const char kReaderModeInCCTDescription[];
 
+extern const char kSafeBrowsingUseLocalBlacklistsV2Name[];
+extern const char kSafeBrowsingUseLocalBlacklistsV2Description[];
+
 extern const char kSetMarketUrlForTestingName[];
 extern const char kSetMarketUrlForTestingDescription[];