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diff --git a/chromium/third_party/catapult/third_party/polymer2/bower_components/polymer/types/lib/elements/array-selector.d.ts b/chromium/third_party/catapult/third_party/polymer2/bower_components/polymer/types/lib/elements/array-selector.d.ts
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+++ b/chromium/third_party/catapult/third_party/polymer2/bower_components/polymer/types/lib/elements/array-selector.d.ts
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+/**
+ * DO NOT EDIT
+ *
+ * This file was automatically generated by
+ *   https://github.com/Polymer/gen-typescript-declarations
+ *
+ * To modify these typings, edit the source file(s):
+ *   lib/elements/array-selector.html
+ */
+
+/// <reference path="../../polymer-element.d.ts" />
+/// <reference path="../utils/mixin.d.ts" />
+/// <reference path="../utils/array-splice.d.ts" />
+
+declare namespace Polymer {
+
+
+  /**
+   * Element mixin for recording dynamic associations between item paths in a
+   * master `items` array and a `selected` array such that path changes to the
+   * master array (at the host) element or elsewhere via data-binding) are
+   * correctly propagated to items in the selected array and vice-versa.
+   *
+   * The `items` property accepts an array of user data, and via the
+   * `select(item)` and `deselect(item)` API, updates the `selected` property
+   * which may be bound to other parts of the application, and any changes to
+   * sub-fields of `selected` item(s) will be kept in sync with items in the
+   * `items` array.  When `multi` is false, `selected` is a property
+   * representing the last selected item.  When `multi` is true, `selected`
+   * is an array of multiply selected items.
+   */
+  function ArraySelectorMixin<T extends new (...args: any[]) => {}>(base: T): T & ArraySelectorMixinConstructor & Polymer.ElementMixinConstructor & Polymer.PropertyEffectsConstructor & Polymer.TemplateStampConstructor & Polymer.PropertyAccessorsConstructor & Polymer.PropertiesChangedConstructor & Polymer.PropertiesMixinConstructor;
+
+  interface ArraySelectorMixinConstructor {
+    new(...args: any[]): ArraySelectorMixin;
+  }
+
+  interface ArraySelectorMixin {
+
+    /**
+     * An array containing items from which selection will be made.
+     */
+    items: any[]|null|undefined;
+
+    /**
+     * When `true`, multiple items may be selected at once (in this case,
+     * `selected` is an array of currently selected items).  When `false`,
+     * only one item may be selected at a time.
+     */
+    multi: boolean|null|undefined;
+
+    /**
+     * When `multi` is true, this is an array that contains any selected.
+     * When `multi` is false, this is the currently selected item, or `null`
+     * if no item is selected.
+     */
+    selected: object|object[]|null;
+
+    /**
+     * When `multi` is false, this is the currently selected item, or `null`
+     * if no item is selected.
+     */
+    selectedItem: object|null;
+
+    /**
+     * When `true`, calling `select` on an item that is already selected
+     * will deselect the item.
+     */
+    toggle: boolean|null|undefined;
+
+    /**
+     * Clears the selection state.
+     */
+    clearSelection(): void;
+
+    /**
+     * Returns whether the item is currently selected.
+     *
+     * @param item Item from `items` array to test
+     * @returns Whether the item is selected
+     */
+    isSelected(item: any): boolean;
+
+    /**
+     * Returns whether the item is currently selected.
+     *
+     * @param idx Index from `items` array to test
+     * @returns Whether the item is selected
+     */
+    isIndexSelected(idx: number): boolean;
+
+    /**
+     * Deselects the given item if it is already selected.
+     *
+     * @param item Item from `items` array to deselect
+     */
+    deselect(item: any): void;
+
+    /**
+     * Deselects the given index if it is already selected.
+     *
+     * @param idx Index from `items` array to deselect
+     */
+    deselectIndex(idx: number): void;
+
+    /**
+     * Selects the given item.  When `toggle` is true, this will automatically
+     * deselect the item if already selected.
+     *
+     * @param item Item from `items` array to select
+     */
+    select(item: any): void;
+
+    /**
+     * Selects the given index.  When `toggle` is true, this will automatically
+     * deselect the item if already selected.
+     *
+     * @param idx Index from `items` array to select
+     */
+    selectIndex(idx: number): void;
+  }
+
+  /**
+   * Element implementing the `Polymer.ArraySelector` mixin, which records
+   * dynamic associations between item paths in a master `items` array and a
+   * `selected` array such that path changes to the master array (at the host)
+   * element or elsewhere via data-binding) are correctly propagated to items
+   * in the selected array and vice-versa.
+   *
+   * The `items` property accepts an array of user data, and via the
+   * `select(item)` and `deselect(item)` API, updates the `selected` property
+   * which may be bound to other parts of the application, and any changes to
+   * sub-fields of `selected` item(s) will be kept in sync with items in the
+   * `items` array.  When `multi` is false, `selected` is a property
+   * representing the last selected item.  When `multi` is true, `selected`
+   * is an array of multiply selected items.
+   *
+   * Example:
+   *
+   * ```html
+   * <dom-module id="employee-list">
+   *
+   *   <template>
+   *
+   *     <div> Employee list: </div>
+   *     <dom-repeat id="employeeList" items="{{employees}}">
+   *       <template>
+   *         <div>First name: <span>{{item.first}}</span></div>
+   *           <div>Last name: <span>{{item.last}}</span></div>
+   *           <button on-click="toggleSelection">Select</button>
+   *       </template>
+   *     </dom-repeat>
+   *
+   *     <array-selector id="selector" items="{{employees}}" selected="{{selected}}" multi toggle></array-selector>
+   *
+   *     <div> Selected employees: </div>
+   *     <dom-repeat items="{{selected}}">
+   *       <template>
+   *         <div>First name: <span>{{item.first}}</span></div>
+   *         <div>Last name: <span>{{item.last}}</span></div>
+   *       </template>
+   *     </dom-repeat>
+   *
+   *   </template>
+   *
+   * </dom-module>
+   * ```
+   *
+   * ```js
+   * class EmployeeList extends Polymer.Element {
+   *  static get is() { return 'employee-list'; }
+   *  static get properties() {
+   *    return {
+   *      employees: {
+   *        value() {
+   *          return [
+   *            {first: 'Bob', last: 'Smith'},
+   *            {first: 'Sally', last: 'Johnson'},
+   *            ...
+   *          ];
+   *        }
+   *      }
+   *    };
+   *  }
+   *  toggleSelection(e) {
+   *    let item = this.$.employeeList.itemForElement(e.target);
+   *    this.$.selector.select(item);
+   *  }
+   * }
+   * ```
+   */
+  class ArraySelector extends
+    Polymer.ArraySelectorMixin(
+    Polymer.Element) {
+  }
+}
+
+interface HTMLElementTagNameMap {
+  "array-selector": Polymer.ArraySelector;
+}