[Devtools] Fixed hover color in waterfall in darktheme

third_party/WebKit/Source/devtools/front_end/network/networkLogView.css

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 331 matching lines @@
 .network-waterfall-header {
     position: absolute;
     border-left: 0px;
     width: 100%;
     display: table;
     z-index: 200;
     background-color: transparent;
 }
 
 .network-waterfall-header:hover {
-    background-color:hsla(0, 0%, 80%, .5);
+    background-color: hsl(0, 0%, 90%);

[allada, 2016/11/14 18:24:08]

See: .data-grid th:hover in dataGrid.css

 }
 
 .network-waterfall-header div {
     display: table-cell;
     line-height: 14px;
     margin: auto 0px;
     vertical-align: middle;
     text-align: left;
     font-weight: normal;
     padding: 0px 4px;
@@ skipping 21 matching lines @@
 
 .network-waterfall-header .sort-ascending.sort-order-icon {
     display: block;
     background-position: -4px -111px;
 }
 
 .network-waterfall-header .sort-descending.sort-order-icon {
     display: block;
     background-position: -20px -99px;
 }