DevTools: make sidebar section headers wider.

third_party/WebKit/Source/devtools/front_end/ui/viewContainers.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 17 matching lines @@
  */
 
 .sidebar-hidden-override {
     display: none !important;
 }
 
 .expandable-view-title {
     display: flex;
     align-items: center;
     background-color: #eee;
-    height: 20px;
+    height: 26px;
     padding: 0 5px;
     border-top: 1px solid #dadada;
     white-space: nowrap;
     overflow: hidden;
     position: relative;
+    border-bottom: 1px solid transparent;
 }
 
 .expandable-view-title.expanded,
 .expandable-view-title:last-child {
     border-bottom: 1px solid #ddd;
 }
 
 .expandable-view-title::before {
     -webkit-mask-image: url(Images/toolbarButtonGlyphs.png);
     -webkit-mask-size: 352px 168px;
@@ skipping 17 matching lines @@
     -webkit-mask-position: -4px -96px;
 }
 
 .expandable-view-title.expanded::before {
     -webkit-mask-position: -20px -96px;
 }
 
 .expandable-view-title > .toolbar {
     position: absolute;
     right: 0;
-    top: -3px;
+    top: 0;
 }
 
 .sidebar-pane-container .toolbar {
     border-bottom: 1px solid #eee;
 }
 
 .sidebar-pane-container .toolbar > * {
     pointer-events: auto;
 }