Files.app: Update design of menus.

ui/file_manager/file_manager/foreground/css/file_manager.css

 /* Copyright (c) 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. */
 
 /* Special attribute used in HTML to hide elements. */
 body[type='folder'] [invisibleif~='folder'],
 body[type='upload-folder'] [invisibleif~='upload-folder'],
 body[type='saveas-file'] [invisibleif~='saveas-file'],
 body[type='open-file'] [invisibleif~='open-file'],
 body[type='open-multi-file'] [invisibleif~='open-multi-file'],
@@ skipping 1772 matching lines @@
 list.autocomplete-suggestions {
   -webkit-margin-start: -36px;
   background-color: white;
   border-radius: 3px;
   box-shadow: 0 1px 4px 0 rgba(0, 0, 0, .5);
   box-sizing: border-box;  /* To match the width with the search box's. */
   color: rgb(90, 90, 90);
   flex: none;
   margin-top: 10px;
   overflow: hidden;
-  padding: 0;
+  padding: 8px 0;
   position: fixed;
   width: 260px !important; /* This overrides the value specified by script. */
   z-index: 550;
 }
 
 list.autocomplete-suggestions > li {
   align-items: center;
   display: flex;
-  height: 40px;
+  height: 32px;
 }
 
 list.autocomplete-suggestions > li > div.detail-icon {
-  margin: 0 3px;
+  height: 32px;
+  width: 32px;
   flex: none;
 }
 
 list.autocomplete-suggestions > li > div.detail-text {
   flex: auto;
-  margin: 0 4px;
   overflow-x: hidden;
   text-overflow: ellipsis;
 }
 
 list.autocomplete-suggestions > li > div.detail-text em {
   color: rgb(150, 150, 150);
   font-style: normal;
 }
 
 list.autocomplete-suggestions > li > div[search-icon] {
   background: -webkit-image-set(
       url(../images/files/ui/search.png) 1x,
       url(../images/files/ui/2x/search.png) 2x) center no-repeat;
 }
 
 list.autocomplete-suggestions > [selected],
 list.autocomplete-suggestions > [lead] {
-  background-color: rgb(222, 243, 254);
+  background-color: rgba(0, 0, 0, 0.08);
 }
 
 #gear-menu {
   margin-top: 8px;
 }
 
 #gear-menu > cr-menu-item:not(.menuitem-button),
 #sort-menu > cr-menu-item {
   -webkit-margin-end: 50px;
 }
@@ skipping 263 matching lines @@
   padding: 20px 15px;
 }
 
 .text-measure {
   pointer-events: none;
   position: absolute;
   top: 0;
   visibility: hidden;
   z-index: -1;
 }