DevTools: Allow EvaluateScript event with no arguments.

third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 410 matching lines @@
             detailsText = WebInspector.UIString("%d\u2009\u00d7\u2009%d", width, height);
         break;
     case recordType.ParseHTML:
         var endLine = event.args["endData"] && event.args["endData"]["endLine"];
         var url = WebInspector.displayNameForURL(event.args["beginData"]["url"]);
         detailsText = WebInspector.UIString("%s [%s\u2026%s]", url, event.args["beginData"]["startLine"] + 1, endLine >= 0 ? endLine + 1 : "");
         break;
 
     case recordType.CompileScript:
     case recordType.EvaluateScript:
-        var url = eventData["url"];
+        var url = eventData && eventData["url"];
         if (url)
             detailsText = WebInspector.displayNameForURL(url) + ":" + (eventData["lineNumber"] + 1);
         break;
     case recordType.ParseScriptOnBackground:
     case recordType.XHRReadyStateChange:
     case recordType.XHRLoad:
         var url = eventData["url"];
         if (url)
             detailsText = WebInspector.displayNameForURL(url);
         break;
@@ skipping 309 matching lines @@
             contentHelper.appendTextRow(WebInspector.UIString("MIME Type"), eventData["mimeType"]);
         if ("priority" in eventData) {
             var priority = WebInspector.uiLabelForPriority(eventData["priority"]);
             contentHelper.appendTextRow(WebInspector.UIString("Priority"), priority);
         }
         if (eventData["encodedDataLength"])
             contentHelper.appendTextRow(WebInspector.UIString("Encoded Data Length"), WebInspector.UIString("%d Bytes", eventData["encodedDataLength"]));
         break;
     case recordTypes.CompileScript:
     case recordTypes.EvaluateScript:
-        var url = eventData["url"];
+        var url = eventData && eventData["url"];
         if (url)
             contentHelper.appendLocationRow(WebInspector.UIString("Script"), url, eventData["lineNumber"], eventData["columnNumber"]);
         break;
     case recordTypes.Paint:
         var clip = eventData["clip"];
         contentHelper.appendTextRow(WebInspector.UIString("Location"), WebInspector.UIString("(%d, %d)", clip[0], clip[1]));
         var clipWidth = WebInspector.TimelineUIUtils.quadWidth(clip);
         var clipHeight = WebInspector.TimelineUIUtils.quadHeight(clip);
         contentHelper.appendTextRow(WebInspector.UIString("Dimensions"), WebInspector.UIString("%d × %d", clipWidth, clipHeight));
         // Fall-through intended.
@@ skipping 1373 matching lines @@
     case warnings.V8Deopt:
         span.appendChild(WebInspector.linkifyURLAsNode("https://github.com/GoogleChrome/devtools-docs/issues/53",
             WebInspector.UIString("Not optimized"), undefined, true));
         span.createTextChild(WebInspector.UIString(": %s", eventData["deoptReason"]));
         break;
     default:
         console.assert(false, "Unhandled TimelineModel.WarningType");
     }
     return span;
 }