update elements and fix some bugs

lib/paper_toggle_button.dart

 // DO NOT EDIT: auto-generated with `pub run custom_element_apigen:update`
 
 /// Dart API for the polymer element `paper_toggle_button`.
 @HtmlImport('paper_toggle_button_nodart.html')
 library polymer_elements.lib.src.paper_toggle_button.paper_toggle_button;
 
 import 'dart:html';
 import 'dart:js' show JsArray, JsObject;
 import 'package:web_components/web_components.dart';
 import 'package:polymer_interop/polymer_interop.dart';
+import 'paper_checked_element_behavior.dart';
 import 'paper_inky_focus_behavior.dart';
 import 'iron_button_state.dart';
 import 'iron_a11y_keys_behavior.dart';
 import 'iron_control_state.dart';
+import 'paper_ripple_behavior.dart';
 import 'iron_checked_element_behavior.dart';
 import 'iron_form_element_behavior.dart';
 import 'iron_validatable_behavior.dart';
 import 'color.dart';
 import 'default_theme.dart';
 import 'paper_ripple.dart';
 
+/// Material design: [Switch](https://www.google.com/design/spec/components/selection-controls.html#selection-controls-switch)
+///
 /// `paper-toggle-button` provides a ON/OFF switch that user can toggle the state
 /// by tapping or by dragging the switch.
 ///
 /// Example:
 ///
 ///     <paper-toggle-button></paper-toggle-button>
 ///
 /// ### Styling
 ///
 /// The following custom properties and mixins are available for styling:
 ///
 /// Custom property | Description | Default
 /// ----------------|-------------|----------
 /// `--paper-toggle-button-unchecked-bar-color` | Slider color when the input is not checked | `#000000`
 /// `--paper-toggle-button-unchecked-button-color` | Button color when the input is not checked | `--paper-grey-50`
 /// `--paper-toggle-button-unchecked-ink-color` | Selected/focus ripple color when the input is not checked | `--dark-primary-color`
 /// `--paper-toggle-button-checked-bar-color` | Slider button color when the input is checked | `--default-primary-color`
 /// `--paper-toggle-button-checked-button-color` | Button color when the input is checked | `--default-primary-color`
 /// `--paper-toggle-button-checked-ink-color` | Selected/focus ripple color when the input is checked | `--default-primary-color`
 /// `--paper-toggle-button-unchecked-bar` | Mixin applied to the slider when the input is not checked | `{}`
 /// `--paper-toggle-button-unchecked-button` | Mixin applied to the slider button when the input is not checked | `{}`
 /// `--paper-toggle-button-checked-bar` | Mixin applied to the slider when the input is checked | `{}`
 /// `--paper-toggle-button-checked-button` | Mixin applied to the slider button when the input is checked | `{}`
+/// `--paper-toggle-button-label-color` | Label color | `--primary-text-color`
 @CustomElementProxy('paper-toggle-button')
-class PaperToggleButton extends HtmlElement with CustomElementProxyMixin, PolymerBase, IronA11yKeysBehavior, IronButtonState, IronControlState, PaperInkyFocusBehavior, IronFormElementBehavior, IronValidatableBehavior, IronCheckedElementBehavior {
+class PaperToggleButton extends HtmlElement with CustomElementProxyMixin, PolymerBase, IronA11yKeysBehavior, IronButtonState, IronControlState, PaperRippleBehavior, PaperInkyFocusBehavior, IronFormElementBehavior, IronValidatableBehavior, IronCheckedElementBehavior, PaperCheckedElementBehavior {
   PaperToggleButton.created() : super.created();
   factory PaperToggleButton() => new Element.tag('paper-toggle-button');
 }