Remove third_party/polymer from .gitignore

third_party/polymer/v1_0/components/more-routing/more-route.html

-<!--
-Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
-This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
-The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
-The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
-Code distributed by Google as part of the polymer project is also
-subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
--->
-<link rel="import" href="../polymer/polymer.html">
-
-<link rel="import" href="routing.html">
-<link rel="import" href="more-route-context-aware.html">
-
-<script>
-
-  Polymer({
-
-    is: 'more-route',
-
-    behaviors: [
-      MoreRouting.ContextAware,
-    ],
-
-    properties: {
-
-      /**
-       * The name of this route. Behavior differs based on the presence of
-       * `path` during _declaration_.
-       *
-       * If `path` is present during declaration, it is registered via `name`.
-       *
-       * Otherwise, this `more-route` becomes a `reference` to the route with
-       * `name`. Changing `name` will update which route is referenced.
-       */
-      name: {
-        type:     String,
-        observer: '_nameChanged',
-      },
-
-      /**
-       * A path expression used to parse parameters from the window's URL.
-       */
-      path: {
-        type:     String,
-        obserer: '_pathChanged',
-      },
-
-      /**
-       * Whether this route should become a context for the element that
-       * contains it.
-       */
-      context: {
-        type: Boolean,
-      },
-
-      /**
-       * The underlying `MoreRouting.Route` object that is being wrapped.
-       *
-       * @type {MoreRouting.Route}
-       */
-      route: {
-        type:     Object,
-        readOnly: true,
-        notify:   true,
-        observer: '_routeChanged',
-      },
-
-      /**
-       * The full path expression for this route, including routes this is
-       * nested within.
-       */
-      fullPath: {
-        type:     String,
-        readOnly: true,
-        notify:   true,
-      },
-
-      /**
-       * Param values matching the current URL, or an empty object if not
-       * `active`.
-       */
-      params: {
-        type:     Object,
-        // readOnly: true,
-        notify:   true,
-      },
-
-      /**
-       * Whether the route matches the current URL.
-       */
-      active: {
-        type:     Boolean,
-        readOnly: true,
-        notify:   true,
-      },
-
-    },
-
-    routingReady: function() {
-      this._identityChanged();
-    },
-
-    _nameChanged: function(newName, oldName) {
-      if (oldName) {
-        console.error('Changing the `name` property is not supported for', this);
-        return;
-      }
-      this._identityChanged();
-    },
-
-    _pathChanged: function(newPath, oldPath) {
-      if (oldPath) {
-        console.error('Changing the `path` property is not supported for', this);
-        return;
-      }
-      this._identityChanged();
-    },
-
-    _identityChanged: function() {
-      if (!this.routingIsReady) return;
-
-      if (this.name && this.path) {
-        this._setRoute(MoreRouting.registerNamedRoute(this.name, this.path, this.parentRoute));
-      } else if (this.name) {
-        this._setRoute(MoreRouting.getRouteByName(this.name));
-      } else if (this.path) {
-        this._setRoute(MoreRouting.getRouteByPath(this.path, this.parentRoute));
-      } else {
-        this._setRoute(null);
-      }
-    },
-
-    _routeChanged: function() {
-      this._observeRoute();
-      this._setFullPath(this.route.fullPath);
-      // this._setParams(this.route.params);
-      this.params = this.route.params;
-      this._setActive(this.route.active);
-
-      // @see MoreRouting.ContextAware
-      this.moreRouteContext = this.route;
-
-      if (this.context) {
-        var parent = Polymer.dom(this).parentNode;
-        if (parent.nodeType !== Node.ELEMENT_NODE) {
-          parent = parent.host;
-        }
-
-        if (parent.nodeType === Node.ELEMENT_NODE) {
-          parent.moreRouteContext = this.route;
-        } else {
-          console.warn('Unable to determine parent element for', this, '- not setting a context');
-        }
-      }
-    },
-
-    _observeRoute: function() {
-      // TODO(nevir) https://github.com/Polymore/more-routing/issues/24
-      if (this._routeListener) {
-        this._routeListener.close();
-        this._routeListener = null;
-      }
-      if (this._paramListener) {
-        this._paramListener.close();
-        this._paramListener = null;
-      }
-      if (!this.route) return;
-
-      this._routeListener = this.route.__subscribe(function() {
-        this._setActive(this.route && this.route.active);
-      }.bind(this));
-
-      this._paramListener = this.route.params.__subscribe(function(key, value) {
-        // https://github.com/Polymer/polymer/issues/1505
-        this.notifyPath('params.' + key, value);
-      }.bind(this));
-    },
-
-    urlFor: function(params) {
-      return this.route.urlFor(params);
-    },
-
-    navigateTo: function(params) {
-      return this.route.navigateTo(params);
-    },
-
-    isCurrentUrl: function(params) {
-      return this.route.isCurrentUrl(params);
-    },
-
-  });
-
-</script>