Use ::-internal-media-controls* instead of ::-webkit-media-controls*

Source/core/css/mediaControls.css

 /*
  * Copyright (C) 2009 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Google Inc.
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 14 matching lines @@
 
 /* Chromium default media controls */
 
 /* WARNING: This css file can only style <audio> and <video> elements */
 
 audio {
     width: 300px;
     height: 30px;
 }
 
-audio::-webkit-media-controls,
-video::-webkit-media-controls {
+audio::-internal-media-controls,
+video::-internal-media-controls {
     width: inherit;
     height: inherit;
     position: relative;
     direction: ltr;
     display: flex;
     flex-direction: column;
     justify-content: flex-end;
     align-items: center;
 }
 
-audio::-webkit-media-controls-enclosure, video::-webkit-media-controls-enclosure {
+audio::-internal-media-controls-enclosure, video::-internal-media-controls-enclosure {
     width: 100%;
     max-width: 800px;
     height: 30px;
     flex-shrink: 0;
     bottom: 0;
     text-indent: 0;
     padding: 0;
     box-sizing: border-box;
 }
 
-video::-webkit-media-controls-enclosure {
+video::-internal-media-controls-enclosure {
     padding: 0px 5px 5px 5px;
     height: 35px;
     flex-shrink: 0;
 }
 
-audio::-webkit-media-controls-panel, video::-webkit-media-controls-panel {
+audio::-internal-media-controls-panel, video::-internal-media-controls-panel {
     display: flex;
     flex-direction: row;
     align-items: center;
     /* We use flex-start here to ensure that the play button is visible even
      * if we are too small to show all controls.
      */
     justify-content: flex-start;
     -webkit-user-select: none;
     position: relative;
     width: 100%;
@@ skipping 15 matching lines @@
     right: 0;
     bottom: 0;
     left: 0;
 }
 
 audio:-webkit-full-page-media, video:-webkit-full-page-media {
     max-height: 100%;
     max-width: 100%;
 }
 
-audio:-webkit-full-page-media::-webkit-media-controls-panel,
-video:-webkit-full-page-media::-webkit-media-controls-panel {
+audio:-webkit-full-page-media::-internal-media-controls-panel,
+video:-webkit-full-page-media::-internal-media-controls-panel {
     bottom: 0px;
 }
 
-audio::-webkit-media-controls-mute-button, video::-webkit-media-controls-mute-button {
+audio::-internal-media-controls-mute-button, video::-internal-media-controls-mute-button {
     -webkit-appearance: media-mute-button;
     display: flex;
     flex: none;
     border: none;
     box-sizing: border-box;
     width: 35px;
     height: 30px;
     line-height: 30px;
     margin: 0 6px 0 0;
     padding: 0;
     background-color: initial;
     color: inherit;
 }
 
-audio::-webkit-media-controls-overlay-enclosure {
+audio::-internal-media-controls-overlay-enclosure {
     display: none;
 }
 
-video::-webkit-media-controls-overlay-enclosure {
+video::-internal-media-controls-overlay-enclosure {
     display: flex;
     position: relative;
     flex-direction: column;
     justify-content: flex-end;
     align-items: center;
     flex: 1 1;
     width: 100%;
     max-width: 800px;
     text-indent: 0;
     box-sizing: border-box;
     overflow: hidden;
 }
 
-video::-webkit-media-controls-overlay-play-button {
+video::-internal-media-controls-overlay-play-button {
     -webkit-appearance: media-overlay-play-button;
     display: flex;
     position: absolute;
     top: 50%;
     left: 50%;
     margin-left: -40px;
     margin-top: -40px;
     border: none;
     box-sizing: border-box;
     background-color: transparent;
@@ skipping 11 matching lines @@
     margin-left: 0px;
     margin-top: 0px;
     border: none;
     box-sizing: border-box;
     background-color: transparent;
     width: 30px;
     height: 30px;
     padding: 0;
 }
 
-audio::-webkit-media-controls-play-button, video::-webkit-media-controls-play-button {
+audio::-internal-media-controls-play-button, video::-internal-media-controls-play-button {
     -webkit-appearance: media-play-button;
     display: flex;
     flex: none;
     border: none;
     box-sizing: border-box;
     width: 30px;
     height: 30px;
     line-height: 30px;
     margin-left: 9px;
     margin-right: 9px;
     padding: 0;
     background-color: initial;
     color: inherit;
 }
 
-audio::-webkit-media-controls-timeline-container, video::-webkit-media-controls-timeline-container {
+audio::-internal-media-controls-timeline-container, video::-internal-media-controls-timeline-container {
     -webkit-appearance: media-controls-background;
     display: flex;
     flex-direction: row;
     align-items: center;
     justify-content: flex-end;
     flex: 1 1;
     -webkit-user-select: none;
     height: 16px;
     min-width: 0;
 }
 
-audio::-webkit-media-controls-current-time-display, video::-webkit-media-controls-current-time-display,
-audio::-webkit-media-controls-time-remaining-display, video::-webkit-media-controls-time-remaining-display {
+audio::-internal-media-controls-current-time-display, video::-internal-media-controls-current-time-display,
+audio::-internal-media-controls-time-remaining-display, video::-internal-media-controls-time-remaining-display {
     -webkit-appearance: media-current-time-display;
     -webkit-user-select: none;
     flex: none;
     display: flex;
     border: none;
     cursor: default;
 
     height: 30px;
     margin: 0 9px 0 0;
     padding: 0;
 
     line-height: 30px;
     font-family: Arial, Helvetica, sans-serif;
     font-size: 13px;
     font-weight: bold;
     font-style: normal;
     color: white;
 
     letter-spacing: normal;
     word-spacing: normal;
     text-transform: none;
     text-indent: 0;
     text-shadow: none;
     text-decoration: none;
 }
 
-audio::-webkit-media-controls-timeline, video::-webkit-media-controls-timeline {
+audio::-internal-media-controls-timeline, video::-internal-media-controls-timeline {
     -webkit-appearance: media-slider;
     display: flex;
     flex: 1 1 auto;
     height: 8px;
     margin: 0 15px 0 0;
     padding: 0;
     background-color: transparent;
     min-width: 25px;
     border: initial;
     color: inherit;
 }
 
-audio::-webkit-media-controls-volume-slider, video::-webkit-media-controls-volume-slider {
+audio::-internal-media-controls-volume-slider, video::-internal-media-controls-volume-slider {
     -webkit-appearance: media-volume-slider;
     display: flex;
     /* The 1.9 value was empirically chosen to match old-flexbox behaviour
      * and be aesthetically pleasing.
      */
     flex: 1 1.9 auto;
     height: 8px;
     max-width: 70px;
     margin: 0 15px 0 0;
     padding: 0;
@@ skipping 22 matching lines @@
 /* The negative right margin causes the track to overflow its container. */
 input[type="range" i]::-webkit-media-slider-container > div {
     margin-right: -14px;
 }
 
 input[type="range" i]::-webkit-media-slider-thumb {
     margin-left: -7px;
     margin-right: -7px;
 }
 
-audio::-webkit-media-controls-fullscreen-button, video::-webkit-media-controls-fullscreen-button {
+audio::-internal-media-controls-fullscreen-button, video::-internal-media-controls-fullscreen-button {
     -webkit-appearance: media-enter-fullscreen-button;
     display: flex;
     flex: none;
     border: none;
     box-sizing: border-box;
     width: 30px;
     height: 30px;
     line-height: 30px;
     margin-left: -5px;
     margin-right: 9px;
@@ skipping 11 matching lines @@
     width: 30px;
     height: 30px;
     line-height: 30px;
     margin-left: -5px;
     margin-right: 9px;
     padding: 0;
     background-color: initial;
     color: inherit;
 }
 
-audio::-webkit-media-controls-toggle-closed-captions-button {
+audio::-internal-media-controls-toggle-closed-captions-button {
     display: none;
 }
 
-video::-webkit-media-controls-toggle-closed-captions-button {
+video::-internal-media-controls-toggle-closed-captions-button {
     -webkit-appearance: media-toggle-closed-captions-button;
     display: flex;
     flex: none;
     border: none;
     box-sizing: border-box;
     width: 30px;
     height: 30px;
     line-height: 30px;
     margin-left: -5px;
     margin-right: 9px;
     padding: 0;
     background-color: initial;
     color: inherit;
 }
 
-audio::-webkit-media-controls-fullscreen-volume-slider, video::-webkit-media-controls-fullscreen-volume-slider {
+audio::-internal-media-controls-fullscreen-volume-slider, video::-internal-media-controls-fullscreen-volume-slider {
     display: none;
 }
 
-audio::-webkit-media-controls-fullscreen-volume-min-button, video::-webkit-media-controls-fullscreen-volume-min-button {
+audio::-internal-media-controls-fullscreen-volume-min-button, video::-internal-media-controls-fullscreen-volume-min-button {
     display: none;
 }
 
-audio::-webkit-media-controls-fullscreen-volume-max-button, video::-webkit-media-controls-fullscreen-volume-max-button {
+audio::-internal-media-controls-fullscreen-volume-max-button, video::-internal-media-controls-fullscreen-volume-max-button {
     display: none;
 }
 
 video::-webkit-media-text-track-container {
     position: relative;
     width: 100%;
     overflow: hidden;
     padding-bottom: 5px;
 
     font: 22px sans-serif;
@@ skipping 59 matching lines @@
     font-weight: bold;
 }
 
 video::-webkit-media-text-track-container u {
     text-decoration: underline;
 }
 
 video::-webkit-media-text-track-container i {
     font-style: italic;
 }