DevTools: render category filters in a way that they don't clash.

Source/devtools/front_end/network/networkPanel.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 156 matching lines @@
 }
 
 .resource-timing-view.visible {
     display: block;
 }
 
 .resource-timing-view .network-timing-table {
     width: 100%;
 }
 
-.network-filters-header {
-    flex: 0 0 23px;
-    padding-right: 4px;
-}
-
-.network-filters-header .filter-text-filter {
-    flex-grow: 1;
-    max-width: 312px;
-}
-
 #network-overview-container {
     overflow: hidden;
     flex: auto;
     display: flex;
     position: relative;
     border-bottom: 1px solid #CDCDCD;
 }
 
 .network-overview-canvas-container {
     position: absolute;
@@ skipping 41 matching lines @@
 .request-view.html iframe {
     width: 100%;
     height: 100%;
     position: absolute;
 }
 
 .network-film-strip {
     border-bottom: solid 1px #cdcdcd;
     flex: none !important;
 }