DevTools: Align flamechart ruler with overview

Source/devtools/front_end/ui_lazy/FlameChart.js

 /**
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1475 matching lines @@
     {
         var showScroll = this._totalHeight > this._offsetHeight;
         if (this._vScrollElement.classList.contains("hidden") === showScroll) {
             this._vScrollElement.classList.toggle("hidden", !showScroll);
             this._updateContentElementSize();
         }
     },
 
     _updateContentElementSize: function()
     {
-        this._offsetWidth = this.contentElement.offsetWidth - (WebInspector.isMac() ? 0 : this._vScrollElement.offsetWidth);
+        this._offsetWidth = this.contentElement.offsetWidth;
         this._offsetHeight = this.contentElement.offsetHeight;
     },
 
     _onScroll: function()
     {
         this._scrollTop = this._vScrollElement.scrollTop;
         this.scheduleUpdate();
     },
 
     scheduleUpdate: function()
@@ skipping 24 matching lines @@
         this.update();
     },
 
     _enabled: function()
     {
         return this._rawTimelineDataLength !== 0;
     },
 
     __proto__: WebInspector.HBox.prototype
 }