Add about:flags entry for BlockExternalFormRedirectsNoGesture feature

Bug: 927509
Change-Id: I40a99ea449f51fa20553a480de18768575290f68
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2013124
Reviewed-by: Ted Choc <[email protected]>
Commit-Queue: Jochen Eisinger <[email protected]>
Cr-Commit-Position: refs/heads/master@{#734044}
diff --git a/chrome/browser/flag_descriptions.cc b/chrome/browser/flag_descriptions.cc
index 176d948..4638c5cd 100644
--- a/chrome/browser/flag_descriptions.cc
+++ b/chrome/browser/flag_descriptions.cc
@@ -2618,6 +2618,12 @@
     "homepage URL through a radio button group, and add promo box on NTP "
     "if homepage is not enabled.";
 
+const char kIntentBlockExternalFormRedirectsNoGestureName[] =
+    "Block intents from form submissions without user gesture";
+const char kIntentBlockExternalFormRedirectsNoGestureDescription[] =
+    "Require a user gesture that triggered a form submission in order to "
+    "allow for redirecting to an external intent.";
+
 const char kInterestFeedNotificationsName[] = "Interest Feed Notifications";
 const char kInterestFeedNotificationsDescription[] =
     "Show notifications for some suggested content from the interest feed. "