Add data parameter to payment details modifier.

third_party/WebKit/Source/modules/payments/PaymentRequest.h

Index: third_party/WebKit/Source/modules/payments/PaymentRequest.h
diff --git a/third_party/WebKit/Source/modules/payments/PaymentRequest.h b/third_party/WebKit/Source/modules/payments/PaymentRequest.h
index 3c8aedd563e45f809f90c407e3d92bb98c6e0258..7dc79e6639f1bd786bfcff92aed5c2aaac70c334 100644
--- a/third_party/WebKit/Source/modules/payments/PaymentRequest.h
+++ b/third_party/WebKit/Source/modules/payments/PaymentRequest.h
@@ -57,13 +57,6 @@ class MODULES_EXPORT PaymentRequest final
 
   virtual ~PaymentRequest();
 
-  struct MethodData {
-    MethodData(const Vector<String>& methods, const String& data)
-        : supportedMethods(methods), stringifiedData(data) {}
-    Vector<String> supportedMethods;
-    String stringifiedData;
-  };
-
   ScriptPromise show(ScriptState*);
   ScriptPromise abort(ScriptState*);