Media Controls: move time display elements to media_controls module.

third_party/WebKit/Source/modules/media_controls/elements/MediaControlRemainingTimeDisplayElement.cpp

+// Copyright 2017 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.
+
+#include "modules/media_controls/elements/MediaControlRemainingTimeDisplayElement.h"
+
+#include "modules/media_controls/MediaControlsImpl.h"
+
+namespace blink {
+
+MediaControlRemainingTimeDisplayElement::
+    MediaControlRemainingTimeDisplayElement(MediaControlsImpl& media_controls)
+    : MediaControlTimeDisplayElement(media_controls,
+                                     kMediaTimeRemainingDisplay) {
+  SetShadowPseudoId(
+      AtomicString("-webkit-media-controls-time-remaining-display"));
+}
+
+}  // namespace blink