[CacheStorage] Entry deletion and cache refresh in Inspector.

Source/devtools/front_end/resources/serviceWorkerCacheViews.css

 /*
  * Copyright 2014 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.
  */
 
 .service-worker-cache-data-view .data-view-toolbar {
     position: relative;
     background-color: #eee;
     border-bottom: 1px solid #ccc;
@@ skipping 22 matching lines @@
 }
 
 .service-worker-cache-data-view .data-grid .data-container tr:nth-last-child(1) td {
     border: 0;
 }
 
 .service-worker-cache-data-view .data-grid .data-container tr:nth-last-child(2) td {
     border-bottom: 1px solid #aaa;
 }
 
+.service-worker-cache-data-view .data-grid .data-container tr.selected {
+    background-color: rgb(212, 212, 212);
+    color: inherit;
+}
+
+.service-worker-cache-data-view .data-grid:focus .data-container tr.selected {
+    background-color: rgb(56, 121, 217);
+    color: white;
+}
+
 .service-worker-cache-data-view .section,
 .service-worker-cache-data-view .section > .header,
 .service-worker-cache-data-view .section > .header .title {
     margin: 0;
     min-height: inherit;
     line-height: inherit;
 }
 
 .service-worker-cache-data-view .primitive-value {
     padding-top: 1px;
 }
 
 .service-worker-cache-data-view .data-grid .data-container td .section .header .title {
     white-space: nowrap;
     text-overflow: ellipsis;
     overflow: hidden;
 }