Devtools: Add editable keyframes to the styles sidebar pane

third_party/WebKit/Source/devtools/front_end/elements/elementsPanel.css

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Anthony Ricaud <rik@webkit.org>
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
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 }
 
 .styles-section .styles-section-subtitle a {
     color: inherit;
 }
 
 .styles-section .selector {
     color: #888;
 }
 
-.styles-section .simple-selector.selector-matches {
+.styles-section .simple-selector.selector-matches, .styles-section.keyframe-key {
     color: #222;
 }
 
 .styles-section a[data-uncopyable] {
     display: inline-block;
 }
 
 .styles-section a[data-uncopyable]::before {
     content: attr(data-uncopyable);
     text-decoration: underline;
@@ skipping 515 matching lines @@
     position: absolute;
     right: 0;
     bottom: 0;
     visibility: hidden;
     background-color: rgba(255, 255, 255, 0.9);
 }
 
 .styles-pane:not(.is-editing-style) .styles-section.matched-styles:not(.read-only):hover .sidebar-pane-section-toolbar {
     visibility: visible;
 }