DevTools: simplify Service Workers panel UI, remove non-actionable data.

third_party/WebKit/Source/devtools/front_end/resources/resourcesSidebar.css

 /*
  * Copyright 2016 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 .tree-outline {
     padding-left: 0;
     color: rgb(90, 90, 90);
 }
@@ skipping 18 matching lines @@
 }
 
 li.storage-group-list-item::before {
     display: none;
 }
 
 .navigator-tree-item .icon {
     -webkit-mask-image: url(Images/toolbarButtonGlyphs.png);
     -webkit-mask-size: 352px 168px;
     width: 32px;
-    height: 24px;
-    margin: -3px -3px -3px -7px;
+    height: 20px;
     -webkit-mask-position: -224px -72px;
+    position: relative;
+    top: -2px;
+    margin-right: -3px;
 }
 
 @media (-webkit-min-device-pixel-ratio: 1.5) {
 .navigator-tree-item .icon {
     -webkit-mask-image: url(Images/toolbarButtonGlyphs_2x.png);
 }
 } /* media */
 
 .navigator-file-tree-item .icon {
     -webkit-mask-position: -224px -72px;
@@ skipping 82 matching lines @@
 .domstorage-storage-tree-item.session-storage .icon {
     content: url(Images/sessionStorage.png);
 }
 
 .cookie-storage-tree-item .icon {
     content: url(Images/cookie.png);
 }
 
 .application-cache-storage-tree-item .icon {
     content: url(Images/applicationCache.png);
-}