[inspector] introduced Debugger.scheduleStepIntoAsync

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 = {};
 
@@ skipping 225 matching lines @@
       InspectorTest.completeTest();
       return;
     }
     var fun = testSuite.shift();
     InspectorTest.log("\nRunning test: " + fun.name);
     fun(nextTest);
   }
   nextTest();
 }
 
+InspectorTest.runAsyncTestSuite = async function(testSuite) {
+  for (var test of testSuite) {
+    InspectorTest.log("\nRunning test: " + test.name);
+    await test();
+  }
+  InspectorTest.completeTest();
+}
+
 InspectorTest._sendCommandPromise = function(method, params)
 {
   var requestId = ++InspectorTest._requestId;
   var messageObject = { "id": requestId, "method": method, "params": params };
   var fulfillCallback;
   var promise = new Promise(fulfill => fulfillCallback = fulfill);
   InspectorTest.sendRawCommand(requestId, JSON.stringify(messageObject), fulfillCallback);
   return promise;
 }
 
@@ skipping 32 matching lines @@
     }
   } catch (e) {
     InspectorTest.log("Exception when dispatching message: " + e + "\n" + e.stack + "\n message = " + JSON.stringify(messageObject, null, 2));
     InspectorTest.completeTest();
   }
 }
 
 InspectorTest.loadScript = function(fileName) {
   InspectorTest.addScript(utils.read(fileName));
 }