Record permission prompt gesture metrics on Android.

chrome/browser/permissions/permission_util.cc

Index: chrome/browser/permissions/permission_util.cc
diff --git a/chrome/browser/permissions/permission_util.cc b/chrome/browser/permissions/permission_util.cc
index a9580cee53ec966e4c21d633c619b332623f2b10..06ef694a7df1a7fa9fcd039db51a24368135cc9c 100644
--- a/chrome/browser/permissions/permission_util.cc
+++ b/chrome/browser/permissions/permission_util.cc
@@ -54,6 +54,12 @@ std::string PermissionUtil::GetPermissionString(
   return std::string();
 }
 
+PermissionRequestGestureType PermissionUtil::GetGestureType(bool user_gesture) {
+  return user_gesture ? PermissionRequestGestureType::GESTURE
+                      : PermissionRequestGestureType::NO_GESTURE;
+}
+
+
 bool PermissionUtil::GetPermissionType(ContentSettingsType type,
                                        PermissionType* out) {
   if (type == CONTENT_SETTINGS_TYPE_GEOLOCATION) {