Media Controls: move time display elements to media_controls module.

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

Index: third_party/WebKit/Source/modules/media_controls/elements/MediaControlRemainingTimeDisplayElement.h
diff --git a/third_party/WebKit/Source/modules/media_controls/elements/MediaControlRemainingTimeDisplayElement.h b/third_party/WebKit/Source/modules/media_controls/elements/MediaControlRemainingTimeDisplayElement.h
new file mode 100644
index 0000000000000000000000000000000000000000..5808743f4282b1ad1ef16ea8c07ca18a0aa937bf
--- /dev/null
+++ b/third_party/WebKit/Source/modules/media_controls/elements/MediaControlRemainingTimeDisplayElement.h
@@ -0,0 +1,22 @@
+// 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.
+
+#ifndef MediaControlRemainingTimeDisplayElement_h
+#define MediaControlRemainingTimeDisplayElement_h
+
+#include "core/html/shadow/MediaControlElementTypes.h"
+
+namespace blink {
+
+class MediaControlsImpl;
+
+class MediaControlRemainingTimeDisplayElement final
+    : public MediaControlTimeDisplayElement {
+ public:
+  explicit MediaControlRemainingTimeDisplayElement(MediaControlsImpl&);
+};
+
+}  // namespace blink
+
+#endif  // MediaControlRemainingTimeDisplayElement_h