Move a few media controls elements into modules/media_controls/elements/.

third_party/WebKit/Source/modules/media_controls/elements/MediaControlOverlayEnclosureElement.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/MediaControlOverlayEnclosureElement.h"
+
+#include "core/events/Event.h"
+#include "modules/media_controls/MediaControlsImpl.h"
+
+namespace blink {
+
+MediaControlOverlayEnclosureElement::MediaControlOverlayEnclosureElement(
+    MediaControlsImpl& media_controls)
+    : MediaControlDivElement(media_controls, kMediaControlsPanel) {
+  SetShadowPseudoId(AtomicString("-webkit-media-controls-overlay-enclosure"));
+}
+
+EventDispatchHandlingState*
+MediaControlOverlayEnclosureElement::PreDispatchEventHandler(Event* event) {
+  // When the media element is clicked or touched we want to make the overlay
+  // cast button visible (if the other requirements are right) even if
+  // JavaScript is doing its own handling of the event.  Doing it in
+  // preDispatchEventHandler prevents any interference from JavaScript.
+  // Note that we can't simply test for click, since JS handling of touch events
+  // can prevent their translation to click events.
+  if (event && (event->type() == EventTypeNames::click ||
+                event->type() == EventTypeNames::touchstart)) {
+    static_cast<MediaControlsImpl&>(GetMediaControls())
+        .ShowOverlayCastButtonIfNeeded();
+  }
+  return MediaControlDivElement::PreDispatchEventHandler(event);
+}
+
+}  // namespace blink