Polymer: Remove unused app-layout element

third_party/polymer/v1_0/components-chromium/app-layout/app-header-layout/app-header-layout-extracted.js

-Polymer({
-      is: 'app-header-layout',
-
-      behaviors: [
-        Polymer.IronResizableBehavior
-      ],
-
-      properties: {
-        /**
-         * If true, the current element will have its own scrolling region.
-         * Otherwise, it will use the document scroll to control the header.
-         */
-        hasScrollingRegion: {
-          type: Boolean,
-          value: false,
-          reflectToAttribute: true
-        }
-      },
-
-      listeners: {
-        'iron-resize': '_resizeHandler',
-        'app-header-reset-layout': 'resetLayout'
-      },
-
-      observers: [
-        'resetLayout(isAttached, hasScrollingRegion)'
-      ],
-
-      /**
-       * A reference to the app-header element.
-       *
-       * @property header
-       */
-      get header() {
-        return Polymer.dom(this.$.header).getDistributedNodes()[0];
-      },
-
-      /**
-       * Resets the layout. This method is automatically called when the element is attached
-       * to the DOM.
-       *
-       * @method resetLayout
-       */
-      resetLayout: function() {
-        this._updateScroller();
-        this.debounce('_resetLayout', this._updateContentPosition);
-      },
-
-      _updateContentPosition: function() {
-        var header = this.header;
-        if (!this.isAttached || !header) {
-          return;
-        }
-
-        // Get header height here so that style reads are batched together before style writes
-        // (i.e. getBoundingClientRect() below).
-        var headerHeight = header.offsetHeight;
-
-        // Update the header position.
-        if (!this.hasScrollingRegion) {
-          var rect = this.getBoundingClientRect();
-          var rightOffset = document.documentElement.clientWidth - rect.right;
-          header.style.left = rect.left + 'px';
-          header.style.right = rightOffset + 'px';
-        } else {
-          header.style.left = '';
-          header.style.right = '';
-        }
-
-        // Update the content container position.
-        var containerStyle = this.$.contentContainer.style;
-        if (header.fixed && !header.willCondense() && this.hasScrollingRegion) {
-          // If the header size does not change and we're using a scrolling region, exclude
-          // the header area from the scrolling region so that the header doesn't overlap
-          // the scrollbar.
-          containerStyle.marginTop = headerHeight + 'px';
-          containerStyle.paddingTop = '';
-        } else {
-          containerStyle.paddingTop = headerHeight + 'px';
-          containerStyle.marginTop = '';
-        }
-      },
-
-      _updateScroller: function() {
-        if (!this.isAttached) {
-          return;
-        }
-        var header = this.header;
-        if (header) {
-          header.scrollTarget = this.hasScrollingRegion ?
-              this.$.contentContainer : this.ownerDocument.documentElement;
-        }
-      },
-
-      _resizeHandler: function() {
-        this.resetLayout();
-      }
-    });