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/about_flags.cc b/chrome/browser/about_flags.cc
index dbbcbf2..54d4a162 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1733,6 +1733,10 @@
     {"isolate-origins", flag_descriptions::kIsolateOriginsName,
      flag_descriptions::kIsolateOriginsDescription, kOsAll,
      ORIGIN_LIST_VALUE_TYPE(switches::kIsolateOrigins, "")},
+    {"kids-management-url-classification",
+     flag_descriptions::kKidsManagementUrlClassificationName,
+     flag_descriptions::kKidsManagementUrlClassificationDescription, kOsAll,
+     FEATURE_VALUE_TYPE(features::kKidsManagementUrlClassification)},
     {"site-isolation-trial-opt-out",
      flag_descriptions::kSiteIsolationOptOutName,
      flag_descriptions::kSiteIsolationOptOutDescription, kOsAll,