Fix payments layout test timeout.

third_party/WebKit/LayoutTests/payments/resources/payment-request-mock.js

 /*
  * payment-request-mock contains a mock implementation of PaymentRequest.
  */
 
 "use strict";
 
 let paymentRequestMock = loadMojoModules(
     'paymentRequestMock',
-    ['third_party/WebKit/public/platform/modules/payments/payment_request.mojom',
+    ['components/payments/payment_request.mojom',
      'mojo/public/js/router',
     ]).then(mojo => {
   let [paymentRequest, router] =  mojo.modules;
 
   class PaymentRequestMock {
     constructor(interfaceProvider) {
       interfaceProvider.addInterfaceOverrideForTesting(
         paymentRequest.PaymentRequest.name,
         handle => this.connectPaymentRequest_(handle));
 
@@ skipping 32 matching lines @@
       }
       this.client_.onPaymentResponse(new paymentRequest.PaymentResponse(data));
     }
 
     onComplete() {
       this.client_.onComplete();
     }
   }
   return new PaymentRequestMock(mojo.frameInterfaces);
 });