PaymentHandler: Replace sequence with FrozenArray in PaymentRequestEvent.idl.

third_party/WebKit/Source/modules/payments/PaymentRequestEvent.idl

Index: third_party/WebKit/Source/modules/payments/PaymentRequestEvent.idl
diff --git a/third_party/WebKit/Source/modules/payments/PaymentRequestEvent.idl b/third_party/WebKit/Source/modules/payments/PaymentRequestEvent.idl
index b91490965c02844dccc96baa7731af0eac5979ae..c2c69af653e676f64ff356f8fcf1120b6d20f2d7 100644
--- a/third_party/WebKit/Source/modules/payments/PaymentRequestEvent.idl
+++ b/third_party/WebKit/Source/modules/payments/PaymentRequestEvent.idl
@@ -12,9 +12,9 @@
     readonly attribute USVString topLevelOrigin;
     readonly attribute USVString paymentRequestOrigin;
     readonly attribute DOMString paymentRequestId;
-    readonly attribute sequence<PaymentMethodData> methodData;
+    readonly attribute FrozenArray<PaymentMethodData> methodData;
     readonly attribute PaymentItem total;
-    readonly attribute sequence<PaymentDetailsModifier> modifiers;
+    readonly attribute FrozenArray<PaymentDetailsModifier> modifiers;
     readonly attribute DOMString instrumentKey;
 
     [CallWith=ScriptState] Promise<WindowClient> openWindow(USVString url);