[DevTools] Fix location.script().sourceURL

third_party/WebKit/Source/devtools/front_end/sources/ScriptFormatterEditorAction.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.DebuggerSourceMapping}
  * @param {!WebInspector.DebuggerModel} debuggerModel
  * @param {!WebInspector.ScriptFormatterEditorAction} editorAction
  */
 WebInspector.FormatterScriptMapping = function(debuggerModel, editorAction)
 {
     this._debuggerModel = debuggerModel;
     this._editorAction = editorAction;
 }
 
 WebInspector.FormatterScriptMapping.prototype = {
     /**
      * @override
      * @param {!WebInspector.DebuggerModel.Location} rawLocation
      * @return {?WebInspector.UILocation}
      */
     rawLocationToUILocation: function(rawLocation)
     {
         var debuggerModelLocation = /** @type {!WebInspector.DebuggerModel.Location} */ (rawLocation);
         var script = debuggerModelLocation.script();
+        if (!script)
+            return null;
         var uiSourceCode = this._editorAction._uiSourceCodes.get(script);
         if (!uiSourceCode)
             return null;
 
         var formatData = this._editorAction._formatData.get(uiSourceCode);
         if (!formatData)
             return null;
         var mapping = formatData.mapping;
         var lineNumber = debuggerModelLocation.lineNumber;
         var columnNumber = debuggerModelLocation.columnNumber || 0;
@@ skipping 348 matching lines @@
 
             var targets = WebInspector.targetManager.targets();
             for (var i = 0; i < targets.length; ++i) {
                 var scriptMapping = /** @type {!WebInspector.FormatterScriptMapping} */(this._scriptMappingByTarget.get(targets[i]));
                 WebInspector.debuggerWorkspaceBinding.setSourceMapping(targets[i], formattedUISourceCode, scriptMapping);
             }
             this._showIfNeeded(uiSourceCode, formattedUISourceCode, formatterMapping);
         }
     }
 }