Timeline: fix 'Range'/Pie Chart overlap when timeline details pan is shrunk

Source/devtools/front_end/timelinePanel.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
@@ skipping 742 matching lines @@
     flex: none;
     position: relative;
     margin: 8px;
 }
 
 .timeline-range-summary {
     align-items: center;
     margin: 6px;
 }
 
+.timeline-range-summary > div {
+    flex-shrink: 0;
+}
+
 .timeline-aggregated-info-legend > div {
     overflow: hidden;
     white-space: nowrap;
     text-overflow: ellipsis;
 }
 
 .timeline-aggregated-info .pie-chart {
     margin-left: 20px;
     margin-bottom: 10px;
 }
@@ skipping 32 matching lines @@
 }
 
 .paint-profiler-image-view {
     overflow: hidden;
 }
 
 .paint-profiler-image-view img {
     border: solid 1px black;
     -webkit-transform-origin: 0px 0px;
 }