TimelinePanel: do not collapse record when user changes panel.

Source/devtools/front_end/TimelineView.js

Index: Source/devtools/front_end/TimelineView.js
diff --git a/Source/devtools/front_end/TimelineView.js b/Source/devtools/front_end/TimelineView.js
index f3fa5bababb115ecae737dbf7c8f7edcc440d4a9..252cc4f4379c4d4f9956db3fdcbbd2c1a4cb5295 100644
--- a/Source/devtools/front_end/TimelineView.js
+++ b/Source/devtools/front_end/TimelineView.js
@@ -490,12 +490,15 @@ WebInspector.TimelineView.prototype = {
         return [this._containerElement];
     },
 
-    wasShown: function()
+    refreshRecords: function()
     {
-        WebInspector.View.prototype.wasShown.call(this);
-
         this._repopulateRecords();
         this._updateSelectionDetails();
+    },
+
+    wasShown: function()
+    {
+        WebInspector.View.prototype.wasShown.call(this);
 
         if (!WebInspector.TimelinePanel._categoryStylesInitialized) {
             WebInspector.TimelinePanel._categoryStylesInitialized = true;