Add about flag for --ignore-litepage-redirect-optimization-blacklist

Bug: 959996
Change-Id: Ief956d57c34c2eb8005c1dd395306f0fa48f092a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1597635
Reviewed-by: Tarun Bansal <[email protected]>
Commit-Queue: Robert Ogden <[email protected]>
Cr-Commit-Position: refs/heads/master@{#657049}
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index 0779bf6..2de9392 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -669,6 +669,9 @@
 extern const char kIgnorePreviewsBlacklistName[];
 extern const char kIgnorePreviewsBlacklistDescription[];
 
+extern const char kIgnoreLitePageRedirectHintsBlacklistName[];
+extern const char kIgnoreLitePageRedirectHintsBlacklistDescription[];
+
 extern const char kCompositorThreadedScrollbarScrollingName[];
 extern const char kCompositorThreadedScrollbarScrollingDescription[];