DevTools: Promisify Profiler and HeapProfiler domains

third_party/WebKit/Source/devtools/front_end/sdk/CPUProfilerModel.js

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  * 1. Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *
@@ skipping 103 matching lines @@
   }
 
   startRecording() {
     this._isRecording = true;
     var intervalUs = Common.moduleSetting('highResolutionCpuProfiling').get() ? 100 : 1000;
     this._profilerAgent.setSamplingInterval(intervalUs);
     this._profilerAgent.start();
   }
 
   /**
-   * @return {!Promise.<?Protocol.Profiler.Profile>}
+   * @return {!Promise<?Protocol.Profiler.Profile>}
    */
   stopRecording() {
-    /**
-     * @param {?Protocol.Error} error
-     * @param {?Protocol.Profiler.Profile} profile
-     * @return {?Protocol.Profiler.Profile}
-     */
-    function extractProfile(error, profile) {
-      return !error && profile ? profile : null;
-    }
     this._isRecording = false;
-    return this._profilerAgent.stop(extractProfile);
+    return this._profilerAgent.stop();
   }
 
   /**
    * @return {!Promise}
    */
   startPreciseCoverage() {
     return this._profilerAgent.startPreciseCoverage();
   }
 
   /**
    * @return {!Promise<!Array<!Protocol.Profiler.ScriptCoverage>>}
    */
   takePreciseCoverage() {
-    return this._profilerAgent.takePreciseCoverage((error, coverage) => error ? [] : coverage);
+    return this._profilerAgent.takePreciseCoverage().then(result => result || []);
   }
 
   /**
    * @return {!Promise}
    */
   stopPreciseCoverage() {
     return this._profilerAgent.stopPreciseCoverage();
   }
 };
 
 SDK.SDKModel.register(SDK.CPUProfilerModel, SDK.Target.Capability.JS, true);
 
 /** @enum {symbol} */
 SDK.CPUProfilerModel.Events = {
   ConsoleProfileStarted: Symbol('ConsoleProfileStarted'),
   ConsoleProfileFinished: Symbol('ConsoleProfileFinished')
 };
 
 /** @typedef {!{id: string, scriptLocation: !SDK.DebuggerModel.Location, title: string, cpuProfile: (!Protocol.Profiler.Profile|undefined), cpuProfilerModel: !SDK.CPUProfilerModel}} */
 SDK.CPUProfilerModel.EventData;