DevTools: introduce "restore defaults and reload" in settings pane.

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 267 matching lines @@
     this._disableJSCheckbox = disableJSElement.getElementsByTagName("input")[0];
     this._updateScriptDisabledCheckbox();
 
     p = this._appendSection(WebInspector.UIString("Appearance"));
     p.appendChild(WebInspector.SettingsUI.createSettingCheckbox(WebInspector.UIString("Show 'Emulation' view in console drawer."), WebInspector.settings.showEmulationViewInDrawer));
     this._appendDrawerNote(p.lastElementChild);
     p.appendChild(WebInspector.SettingsUI.createSettingCheckbox(WebInspector.UIString("Show 'Rendering' view in console drawer."), WebInspector.settings.showRenderingViewInDrawer));
     this._appendDrawerNote(p.lastElementChild);
     var splitVerticallyTitle = WebInspector.UIString("Split panels vertically when docked to %s", WebInspector.experimentsSettings.dockToLeft.isEnabled() ? "left or right" : "right");
     p.appendChild(WebInspector.SettingsUI.createSettingCheckbox(splitVerticallyTitle, WebInspector.settings.splitVerticallyWhenDockedToRight));
+    var panelShortcutTitle = WebInspector.UIString("Enable %s + 1-9 shortcut to switch panels", WebInspector.isMac() ? "Cmd" : "Ctrl");
+    p.appendChild(WebInspector.SettingsUI.createSettingCheckbox(panelShortcutTitle, WebInspector.settings.shortcutPanelSwitch));
 
     p = this._appendSection(WebInspector.UIString("Elements"));
     var colorFormatElement = this._createSelectSetting(WebInspector.UIString("Color format"), [
             [ WebInspector.UIString("As authored"), WebInspector.Color.Format.Original ],
             [ "HEX: #DAC0DE", WebInspector.Color.Format.HEX ],
             [ "RGB: rgb(128, 255, 255)", WebInspector.Color.Format.RGB ],
             [ "HSL: hsl(300, 80%, 90%)", WebInspector.Color.Format.HSL ]
         ], WebInspector.settings.colorFormat);
     p.appendChild(colorFormatElement);
     p.appendChild(WebInspector.SettingsUI.createSettingCheckbox(WebInspector.UIString("Show user agent styles"), WebInspector.settings.showUserAgentStyles));
@@ skipping 41 matching lines @@
     p.appendChild(WebInspector.SettingsUI.createSettingCheckbox(WebInspector.UIString("Log XMLHttpRequests"), WebInspector.settings.monitoringXHREnabled));
     p.appendChild(WebInspector.SettingsUI.createSettingCheckbox(WebInspector.UIString("Preserve log upon navigation"), WebInspector.settings.preserveConsoleLog));
 
     if (WebInspector.openAnchorLocationRegistry.handlerNames.length > 0) {
         var handlerSelector = new WebInspector.HandlerSelector(WebInspector.openAnchorLocationRegistry);
         p = this._appendSection(WebInspector.UIString("Extensions"));
         p.appendChild(this._createCustomSetting(WebInspector.UIString("Open links in"), handlerSelector.element));
     }
 
     p = this._appendSection();
-    var panelShortcutTitle = WebInspector.UIString("Enable %s + 1-9 shortcut to switch panels", WebInspector.isMac() ? "Cmd" : "Ctrl");
-    p.appendChild(WebInspector.SettingsUI.createSettingCheckbox(panelShortcutTitle, WebInspector.settings.shortcutPanelSwitch));
+
+    var restoreDefaults = p.createChild("input", "settings-tab-text-button");
+    restoreDefaults.type = "button";
+    restoreDefaults.value = WebInspector.UIString("Restore defaults and reload");
+    restoreDefaults.addEventListener("click", restoreAndReload);
+
+    function restoreAndReload()
+    {
+        if (window.localStorage)
+            window.localStorage.clear();
+        WebInspector.reload();
+    }
 }
 
 WebInspector.GenericSettingsTab.prototype = {
     _updateScriptDisabledCheckbox: function()
     {
         /**
          * @param {?Protocol.Error} error
          * @param {string} status
          * @this {WebInspector.GenericSettingsTab}
          */
@@ skipping 740 matching lines @@
             var inputElement = this._addInputElements[columnId];
             inputElement.value = "";
         }
     },
 
     __proto__: WebInspector.SettingsList.prototype
 }
 
 /** @type {!WebInspector.SettingsController} */
 WebInspector.settingsController;