DevTools: Implement Styles search and Computed style filter

Source/devtools/front_end/breadcrumbList.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 14 matching lines @@
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 .crumbs {
     display: inline-block;
     pointer-events: auto;
     cursor: default;
     font-size: 11px;
-    line-height: 17px;
+    line-height: 22px;
 }
 
 .crumbs .crumb {
     display: inline-block;
     padding: 0 7px;
-    height: 18px;
+    height: 22px;
     white-space: nowrap;
 }
 
 .crumbs .crumb.collapsed > * {
     display: none;
 }
 
 .crumbs .crumb.collapsed::before {
     content: "\2026";
     font-weight: bold;
 }
 
 .crumbs .crumb.compact .extra {
     display: none;
 }
 
 .crumbs .crumb.selected, .crumbs .crumb.selected:hover {
     background-color: rgb(56, 121, 217);
     color: white;
     text-shadow: rgba(255, 255, 255, 0.5) 0 0 0;
 }
 
 .crumbs .crumb:hover {
     background-color: rgb(216, 216, 216);
 }