DevTools: Hide overview pane on timeline landing page.

third_party/WebKit/Source/devtools/front_end/timeline/TimelinePanel.js

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Intel 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.
@@ skipping 710 matching lines @@
       return;
     }
     if (this._helpMessageElement)
       this._helpMessageElement.remove();
     delete this._helpMessageElement;
   }
 
   _showLandingPage() {
     if (this._landingPage)
       return;
-    this._detailsSplitWidget.detach();
+    this._timelinePane.detach();
     this._landingPage = new Timeline.TimelineLandingPage();
-    this._landingPage.show(this._timelinePane.element);
+    this._landingPage.show(this.element);
   }
 
   _hideLandingPage() {
     if (!this._landingPage)
       return;
     this._landingPage.detach();
     this._landingPage = null;
-    this._detailsSplitWidget.show(this._timelinePane.element);
+    this._timelinePane.show(this.element);
   }
 
   /**
    * @override
    */
   loadingStarted() {
     this._hideRecordingHelpMessage();
 
     if (this._statusPane)
       this._statusPane.hide();
@@ skipping 1218 matching lines @@
   }
 
   /**
    * @override
    * @param {!SDK.Target} target
    */
   targetRemoved(target) {
     this._targets.remove(target, true);
   }
 };