DevTools: Add JSDoc for static methods, fix JSDoc types and induced errors

Source/devtools/front_end/ui/SettingsUI.js

 /*
  * Copyright (C) 2014 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 71 matching lines @@
 }
 
 /**
  * @param {string} label
  * @param {!WebInspector.Setting} setting
  * @param {boolean} numeric
  * @param {number=} maxLength
  * @param {string=} width
  * @param {function(string):?string=} validatorCallback
  * @param {boolean=} instant
+ * @return {!Element}
  */
 WebInspector.SettingsUI.createSettingInputField = function(label, setting, numeric, maxLength, width, validatorCallback, instant)
 {
     var p = document.createElement("p");
     var labelElement = p.createChild("label");
     labelElement.textContent = label;
     var inputElement = p.createChild("input");
     inputElement.value = setting.get();
     inputElement.type = "text";
     if (numeric)
@@ skipping 61 matching lines @@
     return p;
 }
 
 /**
  * @param {string} label
  * @param {!WebInspector.Setting} setting
  * @param {number=} maxLength
  * @param {string=} width
  * @param {!WebInspector.Setting=} toggleSetting
  * @param {string=} defaultText
+ * @return {!Element}
  */
 WebInspector.SettingsUI.createSettingLabel = function(label, setting, maxLength, width, toggleSetting, defaultText)
 {
     var p = document.createElement("p");
     var labelElement = p.createChild("span");
     labelElement.textContent = label;
     if (label)
         labelElement.style.marginRight = "5px";
     var spanElement = p.createChild("span");
     spanElement.textContent = setting.get();
@@ skipping 10 matching lines @@
         var text = toggleSetting && !toggleSetting.get() ? (defaultText || "") : setting.get();
         spanElement.title = text;
         if (maxLength && text.length > maxLength)
             text = text.substring(0, maxLength - 2) + "...";
         spanElement.textContent = text;
     }
 
     return p;
 }
 
+/**
+ * @param {string} name
+ * @param {!Element} element
+ * @return {!Element}
+ */
 WebInspector.SettingsUI.createCustomSetting = function(name, element)
 {
     var p = document.createElement("p");
     var fieldsetElement = document.createElement("fieldset");
     fieldsetElement.createChild("label").textContent = name;
     fieldsetElement.appendChild(element);
     p.appendChild(fieldsetElement);
     return p;
 }
 
@@ skipping 68 matching lines @@
 
 WebInspector.UISettingDelegate.prototype = {
     /**
      * @return {?Element}
      */
     settingElement: function()
     {
         return null;
     }
 }