DevTools: reformat front-end code to match chromium style.

third_party/WebKit/Source/devtools/front_end/timeline/TimelineLayersView.js

 /*
  * Copyright 2014 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 /**
  * @constructor
  * @extends {WebInspector.SplitWidget}
  * @param {!WebInspector.TimelineModel} model
@@ skipping 33 matching lines @@
      */
     showLayerTree: function(frameLayerTree)
     {
         this._frameLayerTree = frameLayerTree;
         if (this.isShowing())
             this._update();
         else
             this._updateWhenVisible = true;
     },
 
+    /**
+     * @override
+     */
     wasShown: function()
     {
         if (this._updateWhenVisible) {
             this._updateWhenVisible = false;
             this._update();
         }
     },
 
     /**
      * @param {!WebInspector.Event} event
      */
     _onPaintProfilerRequested: function(event)
     {
         var selection = /** @type {!WebInspector.LayerView.Selection} */ (event.data);
         this._layers3DView.snapshotForSelection(selection).then(snapshotWithRect => {
             if (snapshotWithRect)
                 this._showPaintProfilerCallback(snapshotWithRect.snapshot);
         });
     },
 
     _update: function()
     {
         this._frameLayerTree.layerTreePromise().then(layerTree => this._layerViewHost.setLayerTree(layerTree));
     },
 
     __proto__: WebInspector.SplitWidget.prototype
 };