[inspector] added creation frame for async call chains for promises

test/inspector/debugger/async-stack-await.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.
 
 print('Checks that async stacks works for async/await');
 
 InspectorTest.addScript(`
 async function foo1() {
   debugger;
   return Promise.resolve();
 }
 
 async function foo2() {
   await Promise.resolve();
   debugger;
   await Promise.resolve();
   debugger;
   await foo1();
   await Promise.all([ Promise.resolve() ]).then(foo1);
   debugger;
 }
 
 async function test() {
   await foo2();
 }
 //# sourceURL=test.js`, 7, 26);
 
 InspectorTest.setupScriptMap();
 Protocol.Debugger.onPaused(message => {
   InspectorTest.logCallFrames(message.params.callFrames);

[dgozman, 2017/01/24 23:57:44]

Do you want to extract this whole method into InspectorTest.logCallChain() ?

[kozy, 2017/01/25 00:45:43]

Done.

   var asyncStackTrace = message.params.asyncStackTrace;
   while (asyncStackTrace) {
-    InspectorTest.log(`-- ${asyncStackTrace.description} --`);
+    if (asyncStackTrace.promiseCreationFrame) {
+      var frame = asyncStackTrace.promiseCreationFrame;
+      InspectorTest.log(`-- ${asyncStackTrace.description} (${frame.url
+                        }:${frame.lineNumber}:${frame.columnNumber})--`);
+    } else {
+      InspectorTest.log(`-- ${asyncStackTrace.description} --`);
+    }
     InspectorTest.logCallFrames(asyncStackTrace.callFrames);
     asyncStackTrace = asyncStackTrace.parent;
   }
   InspectorTest.log('');
   Protocol.Debugger.resume();
 });
 
 Protocol.Debugger.enable();
 Protocol.Debugger.setAsyncCallStackDepth({ maxDepth: 128 });
 Protocol.Runtime.evaluate({ expression: 'test()//# sourceURL=expr.js',
     awaitPromise: true })
   .then(InspectorTest.logMessage)
   .then(InspectorTest.completeTest);