PaymentRequest: Introduce PaymentMethodData.

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

Index: third_party/WebKit/Source/modules/payments/PaymentMethodData.idl
diff --git a/third_party/WebKit/Source/modules/payments/PaymentItem.idl b/third_party/WebKit/Source/modules/payments/PaymentMethodData.idl
similarity index 66%
copy from third_party/WebKit/Source/modules/payments/PaymentItem.idl
copy to third_party/WebKit/Source/modules/payments/PaymentMethodData.idl
index 7a7ab7dc2ea6c56eb63246e00aefee8e3994562e..059a02516af778a240bbbbd0ccefbc4d939c14ba 100644
--- a/third_party/WebKit/Source/modules/payments/PaymentItem.idl
+++ b/third_party/WebKit/Source/modules/payments/PaymentMethodData.idl
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// https://w3c.github.io/browser-payment-api/specs/paymentrequest.html#paymentitem-dictionary
+// https://w3c.github.io/browser-payment-api/specs/paymentrequest.html#idl-def-paymentmethoddata
 
 [
     RuntimeEnabled=PaymentRequest
-] dictionary PaymentItem {
-    required DOMString label;
-    required CurrencyAmount amount;
+] dictionary PaymentMethodData {
+    required sequence<DOMString> supportedMethods;
+    object data;
 };