[Media Router] Use common media-router-header for MR UI.

chrome/browser/resources/media_router/elements/route_details/route_details.js

Index: chrome/browser/resources/media_router/elements/route_details/route_details.js
diff --git a/chrome/browser/resources/media_router/elements/route_details/route_details.js b/chrome/browser/resources/media_router/elements/route_details/route_details.js
index 92ba82eccf98442b937c07126e479281c688eb5e..3519067389215e9f1a78e2e25d8acfedf5cba90e 100644
--- a/chrome/browser/resources/media_router/elements/route_details/route_details.js
+++ b/chrome/browser/resources/media_router/elements/route_details/route_details.js
@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 // This Polymer element shows information from media that is currently cast
-// to a device. It is assumed that |route| and |sink| correspond to each other.
+// to a device.
 Polymer({
   is: 'route-details',
 
@@ -18,16 +18,6 @@ Polymer({
     },
 
     /**
-     * The current view to be shown.
-     * @private {media_router.MediaRouterView}
-     */
-    currentView_: {
-      type: String,
-      readOnly: true,
-      value: media_router.MediaRouterView.ROUTE_DETAILS,
-    },
-
-    /**
      * The route to show.
      * @type {?media_router.Route}
      */
@@ -38,15 +28,6 @@ Polymer({
     },
 
     /**
-     * The sink to show.
-     * @type {?media_router.Sink}
-     */
-    sink: {
-      type: Object,
-      value: null,
-    },
-
-    /**
      * The text for the stop casting button.
      * @private {string}
      */