[DevTools] prepapre for null from createCallFrameLiveLocation

third_party/WebKit/Source/devtools/front_end/bindings/DebuggerWorkspaceBinding.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @implements {WebInspector.TargetManager.Observer}
  * @param {!WebInspector.TargetManager} targetManager
  * @param {!WebInspector.Workspace} workspace
  * @param {!WebInspector.NetworkMapping} networkMapping
@@ skipping 134 matching lines @@
         console.assert(rawLocations.length);
         var location = new WebInspector.DebuggerWorkspaceBinding.StackTraceTopFrameLocation(rawLocations, this, updateDelegate, locationPool);
         location.update();
         return location;
     },
 
     /**
      * @param {!WebInspector.DebuggerModel.Location} location
      * @param {function(!WebInspector.LiveLocation)} updateDelegate
      * @param {!WebInspector.LiveLocationPool} locationPool
-     * @return {!WebInspector.DebuggerWorkspaceBinding.Location}
+     * @return {?WebInspector.DebuggerWorkspaceBinding.Location}
      */
     createCallFrameLiveLocation: function(location, updateDelegate, locationPool)
     {
+        var script = location.script();
+        if (!script)
+            return null;
         var target = location.target();
-        this._ensureInfoForScript(/** @type {!WebInspector.Script} */(location.script()));
+        this._ensureInfoForScript(script);
         var liveLocation = this.createLiveLocation(location, updateDelegate, locationPool);
         this._registerCallFrameLiveLocation(target, liveLocation);
         return liveLocation;
     },
 
     /**
      * @param {!WebInspector.DebuggerModel.Location} rawLocation
      * @return {!WebInspector.UILocation}
      */
     rawLocationToUILocation: function(rawLocation)
@@ skipping 423 matching lines @@
  * @param {!WebInspector.LiveLocationPool} locationPool
  */
 WebInspector.DebuggerWorkspaceBinding.StackTraceTopFrameLocation = function(rawLocations, binding, updateDelegate, locationPool)
 {
     WebInspector.LiveLocationWithPool.call(this, updateDelegate, locationPool);
 
     this._updateScheduled = true;
     /** @type {!Set<!WebInspector.LiveLocation>} */
     this._locations = new Set();
     for (var location of rawLocations)
-        this._locations.add(binding.createCallFrameLiveLocation(location, this._scheduleUpdate.bind(this), locationPool));
+        this._locations.add(binding.createLiveLocation(location, this._scheduleUpdate.bind(this), locationPool));

[kozy, 2016/09/30 19:26:32]

We use it mostly for location of console messages and we'd like not to reset
them on page reload.

     this._updateLocation();
 }
 
 WebInspector.DebuggerWorkspaceBinding.StackTraceTopFrameLocation.prototype = {
     /**
      * @override
      * @return {!WebInspector.UILocation}
      */
     uiLocation: function()
     {
@@ skipping 75 matching lines @@
      * @param {number} lineNumber
      * @return {boolean}
      */
     uiLineHasMapping: function(uiSourceCode, lineNumber) { }
 }
 
 /**
  * @type {!WebInspector.DebuggerWorkspaceBinding}
  */
 WebInspector.debuggerWorkspaceBinding;