DevTools: skip animation when resetting Timeline flame chart to initial state

Source/devtools/front_end/components/FlameChart.js

Index: Source/devtools/front_end/components/FlameChart.js
diff --git a/Source/devtools/front_end/components/FlameChart.js b/Source/devtools/front_end/components/FlameChart.js
index 1864e6a5a0bd73f8c5f03f09e5ece28fb4f7f1c5..0ca85fa2008060395435db9cb4edc7d15244c96f 100644
--- a/Source/devtools/front_end/components/FlameChart.js
+++ b/Source/devtools/front_end/components/FlameChart.js
@@ -434,7 +434,7 @@ WebInspector.FlameChart.prototype = {
      */
     setWindowTimes: function(startTime, endTime)
     {
-        if (this._muteAnimation || this._timeWindowLeft === 0 || this._timeWindowRight === Infinity) {
+        if (this._muteAnimation || this._timeWindowLeft === 0 || this._timeWindowRight === Infinity || (startTime === 0 && endTime === Infinity)) {
             // Initial setup.
             this._timeWindowLeft = startTime;
             this._timeWindowRight = endTime;