[DevTools] Migrate FileBasedSearchResultsPane to TreeOutlineInShadow.

third_party/WebKit/Source/devtools/front_end/sources/sourcesSearch.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.
  */
 
 .search-drawer-header {
     flex: none;
     display: flex;
     border-bottom: 2px solid #e8e8e8;
@@ skipping 71 matching lines @@
 }
 
 .search-toolbar-summary .search-message {
     padding-top: 2px;
     padding-left: 1ex;
     text-overflow: ellipsis;
     white-space: nowrap;
     overflow: hidden;
 }
 
-#search-results-pane-file-based li {
-    list-style: none;
-}
-
-#search-results-pane-file-based ol {
-    -webkit-padding-start: 0;
-    margin-top: 0;
-}
-
-#search-results-pane-file-based ol.children {
-    display: none;
-}
-
-#search-results-pane-file-based ol.children.expanded {
-    display: block;
-}
-
-#search-results-pane-file-based li.parent::before {
-    -webkit-user-select: none;
-    background-image: url(Images/toolbarButtonGlyphs.png);
-    background-size: 352px 168px;
-    opacity: 0.5;
-    width: 12px;
-    content: "a";
-    color: transparent;
-    margin-left: -5px;
-    padding-right: 4px;
-    display: inline-block;
-    box-sizing: border-box;
-}
-
 @media (-webkit-min-device-pixel-ratio: 1.1) {
 .search-drawer-header .search-icon {
     background-image: url(Images/toolbarButtonGlyphs_2x.png);
 }
 
 .search-drawer-header .search-cancel-button::before {
     background-image: url(Images/toolbarButtonGlyphs_2x.png);
 }
-
-#search-results-pane-file-based li.parent::before {
-    background-image: url(Images/toolbarButtonGlyphs_2x.png);
-}
 } /* media */
 
-#search-results-pane-file-based li.parent::before {
-    background-position: -4px -96px;
-}
-
-#search-results-pane-file-based li.parent.expanded::before {
-    background-position: -20px -96px;
-}
-
-#search-results-pane-file-based .search-result {
-    font-size: 11px;
-    padding: 2px 0 2px 10px;
-    word-wrap: normal;
-    white-space: pre;
-    cursor: pointer;
-}
-
-#search-results-pane-file-based .search-result:hover {
-    background-color: rgba(121, 121, 121, 0.1);
-}
-
-#search-results-pane-file-based .search-result .search-result-file-name {
-    font-weight: bold;
-    color: #222;
-}
-
-#search-results-pane-file-based .search-result .search-result-matches-count {
-    margin-left: 5px;
-    color: #222;
-}
-
-#search-results-pane-file-based .show-more-matches {
-    padding: 4px 0;
-    color: #222;
-    cursor: pointer;
-    font-size: 11px;
-    margin-left: 20px;
-}
-
-#search-results-pane-file-based .show-more-matches:hover {
-    text-decoration: underline;
-}
-
-#search-results-pane-file-based .search-match {
-    word-wrap: normal;
-    white-space: pre;
-}
-
-#search-results-pane-file-based .search-match .search-match-line-number {
-    color: rgb(128, 128, 128);
-    text-align: right;
-    vertical-align: top;
-    word-break: normal;
-    padding-right: 4px;
-    padding-left: 6px;
-    margin-right: 5px;
-    border-right: 1px solid #BBB;
-}
-
-#search-results-pane-file-based .search-match:not(:hover) .search-match-line-number {
-    background-color: #F0F0F0;
-}
-
-#search-results-pane-file-based .search-match:hover {
-    background-color: rgba(56, 121, 217, 0.1);
-}
-
-#search-results-pane-file-based .search-match .highlighted-match {
-    background-color: #F1EA00;
-}
-
-:host-context(.-theme-with-dark-background) #search-results-pane-file-based .search-match .highlighted-match {
-    background-color: hsl(133, 100%, 30%) !important;
-}
-
-#search-results-pane-file-based a {
-    text-decoration: none;
-    display: block;
-}
-
-#search-results-pane-file-based .search-match .search-match-content {
-    color: #000;
-}
-
 .search-view .search-results {
     overflow-y: auto;
     display: flex;
     flex: auto;
 }
 
 .search-results .empty-view {
     pointer-events: none;
 }
 
 .empty-view {
     font-size: 24px;
     color: rgb(75%, 75%, 75%);
     font-weight: bold;
     padding: 10px;
     display: flex;
     align-items: center;
     justify-content: center;
 }