Add KidsManagementUrlClassification flag to about::flags

Makes testing easier (specially for Android).

Bug: 935032
Change-Id: I206af2810c4874a3edf7514beeb764c377b8a203
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1550880
Commit-Queue: Alan Wink <[email protected]>
Reviewed-by: Marc Treib <[email protected]>
Cr-Commit-Position: refs/heads/master@{#647408}
diff --git a/chrome/browser/flag_descriptions.h b/chrome/browser/flag_descriptions.h
index 066975bf..64725d2 100644
--- a/chrome/browser/flag_descriptions.h
+++ b/chrome/browser/flag_descriptions.h
@@ -1082,6 +1082,9 @@
 extern const char kIsolateOriginsName[];
 extern const char kIsolateOriginsDescription[];
 
+extern const char kKidsManagementUrlClassificationName[];
+extern const char kKidsManagementUrlClassificationDescription[];
+
 extern const char kSiteIsolationOptOutName[];
 extern const char kSiteIsolationOptOutDescription[];
 extern const char kSiteIsolationOptOutChoiceDefault[];