[wasm] Add inspector test for stepping

test/inspector/protocol-test.js

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 InspectorTest = {};
 InspectorTest._dispatchTable = new Map();
 InspectorTest._requestId = 0;
 InspectorTest._dumpInspectorProtocolMessages = false;
 InspectorTest._eventHandler = {};
 
 Protocol = new Proxy({}, {
   get: function(target, agentName, receiver) {
     return new Proxy({}, {
       get: function(target, methodName, receiver) {
         const eventPattern = /^on(ce)?([A-Z][A-Za-z0-9]+)/;
         var match = eventPattern.exec(methodName);
         if (!match) {
           return (args) => InspectorTest._sendCommandPromise(`${agentName}.${methodName}`, args || {});
         } else {
           var eventName = match[2];
           eventName = eventName.charAt(0).toLowerCase() + eventName.slice(1);
           if (match[1])
-            return (args) => InspectorTest._waitForEventPromise(`${agentName}.${eventName}`, args || {});
+            return () => InspectorTest._waitForEventPromise(
+                       `${agentName}.${eventName}`);
           else
             return (listener) => { InspectorTest._eventHandler[`${agentName}.${eventName}`] = listener };
         }
       }
     });
   }
 });
 
 InspectorTest.log = print.bind(null);
 
@@ skipping 180 matching lines @@
       if (InspectorTest._scriptMap && eventName === "Debugger.scriptParsed")
         InspectorTest._scriptMap.set(messageObject.params.scriptId, JSON.parse(JSON.stringify(messageObject.params)));
       if (eventHandler)
         eventHandler(messageObject);
     }
   } catch (e) {
     InspectorTest.log("Exception when dispatching message: " + e + "\n" + e.stack + "\n message = " + JSON.stringify(messageObject, null, 2));
     InspectorTest.completeTest();
   }
 }