[DevTools] Introduce EmulationModel which will encapsulate emulation

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 891 matching lines @@
 
 
 /**
  * @implements {SDK.TargetManager.Observer}
  * @unrestricted
  */
 Main.BackendSettingsSync = class {
   constructor() {
     this._autoAttachSetting = Common.settings.moduleSetting('autoAttachToCreatedPages');
     this._autoAttachSetting.addChangeListener(this._update, this);
-    this._disableJavascriptSetting = Common.settings.moduleSetting('javaScriptDisabled');
-    this._disableJavascriptSetting.addChangeListener(this._update, this);
     SDK.targetManager.observeTargets(this, SDK.Target.Capability.Browser);
   }
 
   /**
    * @param {!SDK.Target} target
    */
   _updateTarget(target) {
     target.pageAgent().setAutoAttachToCreatedPages(this._autoAttachSetting.get());
-    target.emulationAgent().setScriptExecutionDisabled(this._disableJavascriptSetting.get());
   }
 
   _update() {
     SDK.targetManager.targets(SDK.Target.Capability.Browser).forEach(this._updateTarget, this);
   }
 
   /**
    * @param {!SDK.Target} target
    * @override
    */
@@ skipping 18 matching lines @@
    * @override
    * @return {?Element}
    */
   settingElement() {
     return UI.SettingsUI.createSettingCheckbox(
         Common.UIString('Show rulers'), Common.moduleSetting('showMetricsRulers'));
   }
 };
 
 new Main.Main();