Update paper-drawer-panel to 0.8.4 to pick up some fixes.

third_party/polymer/v0_8/components/paper-drawer-panel/paper-drawer-panel.html

Index: third_party/polymer/v0_8/components/paper-drawer-panel/paper-drawer-panel.html
diff --git a/third_party/polymer/v0_8/components/paper-drawer-panel/paper-drawer-panel.html b/third_party/polymer/v0_8/components/paper-drawer-panel/paper-drawer-panel.html
index 20eac7e25fa1d2752c5121029aa2086fea6a4470..f97a293daefdb047423fd236c7f5e8733a9f79ba 100644
--- a/third_party/polymer/v0_8/components/paper-drawer-panel/paper-drawer-panel.html
+++ b/third_party/polymer/v0_8/components/paper-drawer-panel/paper-drawer-panel.html
@@ -239,12 +239,12 @@ To position the drawer to the right, add `rightDrawer` attribute.
     <iron-selector
         attr-for-selected="id"
         class$="[[_computeIronSelectorClass(narrow, transition, dragging, rightDrawer)]]"
-        on-iron-activate="onSelect"
+        activate-event=""
         selected="[[selected]]">
 
       <div id="main" style$="[[_computeMainStyle(narrow, rightDrawer, drawerWidth)]]">
         <content select="[main]"></content>
-        <div id="scrim"></div>
+        <div id="scrim" on-tap="closeDrawer"></div>
         <div id="edgeSwipeOverlay"
             hidden$="[[_computeSwipeOverlayHidden(narrow, disableEdgeSwipe)]]">
         </div>
@@ -397,7 +397,8 @@ To position the drawer to the right, add `rightDrawer` attribute.
         narrow: {
           reflectToAttribute: true,
           type: Boolean,
-          value: false
+          value: false,
+          notify: true
         },
 
         // Whether the drawer is peeking out from the edge.
@@ -474,8 +475,8 @@ To position the drawer to the right, add `rightDrawer` attribute.
       },
 
       listeners: {
-        click: 'onClick',
-        track: 'onTrack'
+        tap: '_onTap',
+        track: '_onTrack'
 
         // TODO: Implement tap handlers when taps are supported.
         //
@@ -518,7 +519,7 @@ To position the drawer to the right, add `rightDrawer` attribute.
         return !narrow || disableEdgeSwipe;
       },
 
-      onTrack: function(event) {
+      _onTrack: function(event) {
         switch (event.detail.state) {
           case 'end':
             this.trackEnd(event);
@@ -610,22 +611,21 @@ To position the drawer to the right, add `rightDrawer` attribute.
         }
       },
 
-      // TODO: Implement tap handlers when taps are supported.
-      //
-      // downHandler: function(e) {
-      //   if (!this.dragging && this.isMainSelected() && this.isEdgeTouch(e)) {
-      //     this.startEdgePeek();
-      //   }
-      // },
-      //
-      // upHandler: function(e) {
-      //   this.stopEdgePeek();
-      // },
-
-      onClick: function(e) {
-        var isTargetToggleElement = e.target &&
+      _downHandler: function(e) {
+        if (!this.dragging && this._isMainSelected() && this._isEdgeTouch(e)) {
+          this._startEdgePeek();
+        }
+      },
+
+      _upHandler: function(e) {
+        this._stopEdgePeek();
+      },
+
+      _onTap: function(e) {
+        var targetElement = Polymer.dom(e).localTarget;
+        var isTargetToggleElement = targetElement &&
           this.drawerToggleAttribute &&
-          e.target.hasAttribute(this.drawerToggleAttribute);
+          targetElement.hasAttribute(this.drawerToggleAttribute);
 
         if (isTargetToggleElement) {
           this.togglePanel();
@@ -722,11 +722,6 @@ To position the drawer to the right, add `rightDrawer` attribute.
         } else {
           s.webkitTransform = this.transformForTranslateX(translateX);
         }
-      },
-
-      onSelect: function(e) {
-        e.preventDefault();
-        this.selected = e.detail.selected;
       }
 
     });