Removed parameter for complete()

Addresses w3c#129 by dropping the algorithm step that passes value to the
payment app. As the boolean passed to complete is not used for anything
else it has been dropped too.

specs/paymentrequest.html

@@ -754,7 +754,7 @@ <h2>ShippingAddress interface</h2>
       <pre class="idl">
         interface ShippingAddress {
           readonly attribute DOMString regionCode;
-          readonly attribute sequence<DOMString> addressLine;
+          readonly attribute sequence&lt;DOMString&gt; addressLine;
           readonly attribute DOMString administrativeArea;
           readonly attribute DOMString locality;
           readonly attribute DOMString dependentLocality;
@@ -842,7 +842,7 @@ <h2>PaymentResponse interface</h2>
           readonly attribute DOMString methodName;
           readonly attribute object details;
 
-          Promise&lt;void&gt; complete(boolean success);
+          Promise&lt;void&gt; complete();
         };
       </pre>
 
@@ -866,9 +866,7 @@ <h2>PaymentResponse interface</h2>
       <section>
         <h2>complete()</h2>
         <p>The <code><dfn>complete</dfn></code> method must be called after the user has accepted the payment
-        request and the [[\acceptPromise]] has been resolved. The <code>complete</code> method
-        takes a boolean argument that indicates the payment was successfully processed if <code>true</code> and
-        that processing failed if <code>false</code>. Calling the <code>complete</code> method tells the user
+        request and the [[\acceptPromise]] has been resolved. Calling the <code>complete</code> method tells the user
         agent that the user interaction is over (and should cause any remaining user interface to be closed).</p>
 
         <div class="issue" data-number="17" title="complete() should take a string argument not boolean">
@@ -885,10 +883,6 @@ <h2>complete()</h2>
           </li>
           <li>Set the value of the internal slot [[\completeCalled]] to <em>true</em>.</li>
           <li>Return <em>promise</em> and asynchronously perform the remaining steps.</li>
-          <li>
-            Pass the value of <code>success</code> to the <a>Payment App</a> that accepted the
-            payment request.
-          </li>
           <li>Close down any remaining user interface.</li>
           <li>Resolve <em>promise</em> with <code>undefined</code>.</li>
         </ol>