DevTools: Remove unused variables. Disallow unused variables with eslint

third_party/WebKit/Source/devtools/front_end/network/NetworkOverview.js

 // Copyright 2015 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.
 /**
  * @unrestricted
  */
 Network.NetworkOverview = class extends UI.TimelineOverviewBase {
   constructor() {
     super();
     this.element.classList.add('network-overview');
 
     /** @type {number} */
     this._numBands = 1;
-    /** @type {number} */
-    this._windowStart = 0;
-    /** @type {number} */
-    this._windowEnd = 0;
-    /** @type {boolean} */
-    this._restoringWindow = false;
     /** @type {boolean} */
     this._updateScheduled = false;
 
     SDK.targetManager.addModelListener(
         SDK.ResourceTreeModel, SDK.ResourceTreeModel.Events.Load, this._loadEventFired, this);
     SDK.targetManager.addModelListener(
         SDK.ResourceTreeModel, SDK.ResourceTreeModel.Events.DOMContentLoaded, this._domContentLoadedEventFired, this);
 
     this.reset();
   }
@@ skipping 81 matching lines @@
     this.resetCanvas();
     var numBands = (((height - 1) / Network.NetworkOverview._bandHeight) - 1) | 0;
     this._numBands = (numBands > 0) ? numBands : 1;
     this.scheduleUpdate();
   }
 
   /**
    * @override
    */
   reset() {
-    this._windowStart = 0;
-    this._windowEnd = 0;
     /** @type {?Components.FilmStripModel} */
     this._filmStripModel = null;
 
     /** @type {number} */
     this._span = 1;
     /** @type {?Network.NetworkTimeBoundary} */
     this._lastBoundary = null;
     /** @type {number} */
     this._nextBand = 0;
     /** @type {!Map.<string, number>} */
@@ skipping 27 matching lines @@
   update() {
     this._updateScheduled = false;
 
     var calculator = this.calculator();
 
     var newBoundary = new Network.NetworkTimeBoundary(calculator.minimumBoundary(), calculator.maximumBoundary());
     if (!this._lastBoundary || !newBoundary.equals(this._lastBoundary)) {
       var span = calculator.boundarySpan();
       while (this._span < span)
         this._span *= 1.25;
+
       calculator.setBounds(calculator.minimumBoundary(), calculator.minimumBoundary() + this._span);
       this._lastBoundary = new Network.NetworkTimeBoundary(calculator.minimumBoundary(), calculator.maximumBoundary());
-      if (this._windowStart || this._windowEnd) {
-        this._restoringWindow = true;
-        var startTime = calculator.minimumBoundary();
-        var totalTime = calculator.boundarySpan();
-        var left = (this._windowStart - startTime) / totalTime;
-        var right = (this._windowEnd - startTime) / totalTime;
-        this._restoringWindow = false;
-      }
     }
 
     var context = this.context();
     var linesByType = {};
     var paddingTop = 2;
 
     /**
      * @param {string} type
      * @param {string} strokeStyle
      */
@@ skipping 94 matching lines @@
     }
     context.restore();
   }
 };
 
 /** @type {number} */
 Network.NetworkOverview._bandHeight = 3;
 
 /** @typedef {{start: number, end: number}} */
 Network.NetworkOverview.Window;