Media Controls: move volume slider to modules/.

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

Index: third_party/WebKit/Source/modules/media_controls/elements/MediaControlVolumeSliderElement.h
diff --git a/third_party/WebKit/Source/modules/media_controls/elements/MediaControlVolumeSliderElement.h b/third_party/WebKit/Source/modules/media_controls/elements/MediaControlVolumeSliderElement.h
new file mode 100644
index 0000000000000000000000000000000000000000..1bb2b658c895001bffb37081e38a2b508caee8d5
--- /dev/null
+++ b/third_party/WebKit/Source/modules/media_controls/elements/MediaControlVolumeSliderElement.h
@@ -0,0 +1,33 @@
+// 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 MediaControlVolumeSliderElement_h
+#define MediaControlVolumeSliderElement_h
+
+#include "core/html/shadow/MediaControlElementTypes.h"
+
+namespace blink {
+
+class Event;
+class MediaControlsImpl;
+
+class MediaControlVolumeSliderElement final : public MediaControlInputElement {
+ public:
+  explicit MediaControlVolumeSliderElement(MediaControlsImpl&);
+
+  // TODO: who calls this?
+  void SetVolume(double);
+
+  // MediaControlInputElement overrides.
+  bool WillRespondToMouseMoveEvents() override;
+  bool WillRespondToMouseClickEvents() override;
+
+ private:
+  void DefaultEventHandler(Event*) override;
+  bool KeepEventInNode(Event*) override;
+};
+
+}  // namespace blink
+
+#endif  // MediaControlVolumeSliderElement_h