[DevTools] Remove Common.Event.target field.

third_party/WebKit/Source/devtools/front_end/main/Main.js

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2007 Matt Lilek (pewtermoose@gmail.com).
  * Copyright (C) 2009 Joseph Pecoraro
  *
  * 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
@@ skipping 790 matching lines @@
     SDK.targetManager.addModelListener(
         SDK.DebuggerModel, SDK.DebuggerModel.Events.DebuggerPaused, this._debuggerPaused, this);
   }
 
   /**
    * @param {!Common.Event} event
    */
   _debuggerPaused(event) {
     SDK.targetManager.removeModelListener(
         SDK.DebuggerModel, SDK.DebuggerModel.Events.DebuggerPaused, this._debuggerPaused, this);
-    var debuggerPausedDetails = /** @type {!SDK.DebuggerPausedDetails} */ (event.data);
-    var debuggerModel = /** @type {!SDK.DebuggerModel} */ (event.target);
+    var debuggerModel = /** @type {!SDK.DebuggerModel} */ (event.data);
+    var debuggerPausedDetails = debuggerModel.debuggerPausedDetails();
     UI.context.setFlavor(SDK.Target, debuggerModel.target());
     Common.Revealer.reveal(debuggerPausedDetails);
   }
 };
 
 /**
  * @unrestricted
  */
 Main.Main.InspectedNodeRevealer = class {
   constructor() {
@@ skipping 153 matching lines @@
    * @override
    * @return {?Element}
    */
   settingElement() {
     return UI.SettingsUI.createSettingCheckbox(
         Common.UIString('Show rulers'), Common.moduleSetting('showMetricsRulers'));
   }
 };
 
 new Main.Main();