DevTools: Unify filtering UI

Source/devtools/front_end/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 48 matching lines @@
     right: 0;
     width: auto;
     border: none;
     background: inherit;
 }
 
 .network.panel:not(.viewing-resource) .sidebar-resizer-vertical {
     display: none;
 }
 
-.network.panel .scope-bar {
-    height: 23px;
-    padding-top: 5px;
-}
-
 .network.panel .data-grid th.sort-descending,
 .network.panel .data-grid th.sort-ascending {
     background: white;
 }
 
 #network-views .network-item-view .tabbed-pane-header {
     height: 31px;
     padding-top: 8px;
     padding-left: 13px;
     white-space: nowrap;
@@ skipping 15 matching lines @@
 }
 
 .network-item-view.visible {
     display: -webkit-flex;
 }
 
 .network-item-view .tabbed-pane-header {
     border-bottom: 1px solid rgb(163, 163, 163);
 }
 
-.network-item-view .scope-bar li {
-    border-bottom-left-radius: 0;
-    border-bottom-right-radius: 0;
-}
-
 .resource-headers-view {
     display: none;
     margin: 6px;
     -webkit-user-select: text;
     position: absolute;
     top: 0;
     left: 0;
     right: 0;
     bottom: 0;
     overflow: auto;
@@ skipping 191 matching lines @@
 }
 
 .resource-websocket-row-opcode td, .resource-websocket-row-opcode + tr td {
     border-top-color: rgb(248, 240, 210);
 }
 
 .resource-websocket-row-error {
     background-color: rgb(255, 237, 237);
     color: rgb(182, 0, 0);
 }
+
+.panel.network .split-view {
+    flex: auto;
+    position: relative;
+}
+
+.network-filters-header {
+    flex: 0 0 23px;
+}