DevTools: Add a checkbox to enable async stacks in the sidebar header.

Source/devtools/front_end/SettingsScreen.js

 /*
  * Copyright (C) 2013 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 377 matching lines @@
     if (WebInspector.experimentsSettings.frameworksDebuggingSupport.isEnabled()) {
         checkbox = WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("Skip stepping through sources with particular names"), WebInspector.settings.skipStackFramesSwitch);
         fieldset = WebInspector.SettingsTab.createSettingFieldset(WebInspector.settings.skipStackFramesSwitch);
         fieldset.appendChild(this._createInputSetting(WebInspector.UIString("Pattern"), WebInspector.settings.skipStackFramesPattern, false, 1000, "100px", WebInspector.SettingsScreen.regexValidator));
         checkbox.appendChild(fieldset);
         p.appendChild(checkbox);
     }
     WebInspector.settings.skipStackFramesSwitch.addChangeListener(this._skipStackFramesSwitchOrPatternChanged, this);
     WebInspector.settings.skipStackFramesPattern.addChangeListener(this._skipStackFramesSwitchOrPatternChanged, this);
 
-    p.appendChild(WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("Enable async stack traces"), WebInspector.settings.enableAsyncStackTraces));
-
     p = this._appendSection(WebInspector.UIString("Profiler"));
     p.appendChild(WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("Show advanced heap snapshot properties"), WebInspector.settings.showAdvancedHeapSnapshotProperties));
     p.appendChild(WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("High resolution CPU profiling"), WebInspector.settings.highResolutionCpuProfiling));
 
     p = this._appendSection(WebInspector.UIString("Console"));
     p.appendChild(WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("Log XMLHttpRequests"), WebInspector.settings.monitoringXHREnabled));
     p.appendChild(WebInspector.SettingsTab.createSettingCheckbox(WebInspector.UIString("Preserve log upon navigation"), WebInspector.settings.preserveConsoleLog));
 
     if (WebInspector.extensionServer.hasExtensions()) {
         var handlerSelector = new WebInspector.HandlerSelector(WebInspector.openAnchorLocationRegistry);
@@ skipping 740 matching lines @@
         var columns = this.columns();
         for (var i = 0; i < columns.length; ++i) {
             var columnId = columns[i];
             var inputElement = this._addInputElements[columnId];
             inputElement.value = "";
         }
     },
 
     __proto__: WebInspector.SettingsList.prototype
 }