Remove navigator.vibrate without user gesture.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index cbccc4bf3871f9b6404545ae33b244de31a8cf0a..08d4661be1efd4ec5345ce003ad271069be73ef3 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2286,6 +2286,10 @@ const FeatureEntry kFeatureEntries[] = {
      flag_descriptions::kFramebustingName,
      flag_descriptions::kFramebustingDescription, kOsAll,
      FEATURE_VALUE_TYPE(features::kFramebustingNeedsSameOriginOrUserGesture)},
+    {"vibrate-requires-user-gesture",
+     flag_descriptions::kVibrateRequiresUserGestureName,
+     flag_descriptions::kVibrateRequiresUserGestureDescription, kOsAll,
+     FEATURE_VALUE_TYPE(features::kVibrateRequiresUserGesture)},
     {"web-payments", flag_descriptions::kWebPaymentsName,
      flag_descriptions::kWebPaymentsDescription, kOsDesktop,
      FEATURE_VALUE_TYPE(features::kWebPayments)},