DevTools: extract modules (non-extensions)

third_party/WebKit/Source/devtools/front_end/perf_ui/ChartViewport.js

 // Copyright 2016 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
  */
-UI.ChartViewport = class extends UI.VBox {
+PerfUI.ChartViewport = class extends UI.VBox {
   constructor() {
     super(true);
 
     this.viewportElement = this.contentElement.createChild('div', 'fill');
     this.viewportElement.addEventListener('mousewheel', this._onMouseWheel.bind(this), false);
     this.viewportElement.addEventListener('keydown', this._handleZoomPanKeys.bind(this), false);
 
     UI.installInertialDragHandle(
         this.viewportElement, this._startDragging.bind(this), this._dragging.bind(this), this._endDragging.bind(this),
         '-webkit-grabbing', null);
@@ skipping 346 matching lines @@
     return {left: windowLeft, right: windowRight};
   }
 
   /**
    * @param {{left: number, right: number}} bounds
    * @private
    */
   _requestWindowTimes(bounds) {
     bounds.left = Number.constrain(bounds.left, this._minimumBoundary, this._totalTime + this._minimumBoundary);
     bounds.right = Number.constrain(bounds.right, this._minimumBoundary, this._totalTime + this._minimumBoundary);
-    if (bounds.right - bounds.left < UI.FlameChart.MinimalTimeWindowMs)
+    if (bounds.right - bounds.left < PerfUI.FlameChart.MinimalTimeWindowMs)
       return;
     this._flameChartDelegate.requestWindowTimes(bounds.left, bounds.right);
   }
 
   /**
    * @param {number} startTime
    * @param {number} endTime
    * @private
    */
   _animateWindowTimes(startTime, endTime) {
@@ skipping 51 matching lines @@
     }
     this._cancelAnimation();
     this._cancelWindowTimesAnimation = UI.animateFunction(
         this.element.window(), this._animateWindowTimes.bind(this),
         [{from: this._timeWindowLeft, to: startTime}, {from: this._timeWindowRight, to: endTime}], 5,
         this._animationCompleted.bind(this));
     this._pendingAnimationTimeLeft = startTime;
     this._pendingAnimationTimeRight = endTime;
   }
 };