New media playback UI.

Source/core/html/shadow/MediaControls.h

 /*
  * Copyright (C) 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * 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 50 matching lines @@
     void refreshClosedCaptionsButtonVisibility();
 
     void enteredFullscreen();
     void exitedFullscreen();
 
     void startedCasting();
     void stoppedCasting();
     void refreshCastButtonVisibility();
     void showOverlayCastButton();
 
+    // Update cast button visibility, but don't trigger a relayout.  This
+    // can e called while stopping DOM objects, during which a layout

[philipj_slow, 2015/07/08 15:06:38]

s/e/be/ but also see the comment about this not seeming to actually be layout
free.

[liberato (no reviews please), 2015/07/09 12:10:56]

this method is now refreshCastButtonVisibilityWithoutUpdate().

+    // can crash.
+    void refreshCastButtonVisibilityWithoutLayout();
+
     void mediaElementFocused();
 
     // Returns the layout object for the part of the controls that should be
     // used for overlap checking during text track layout. May be null.
     LayoutObject* layoutObjectForTextTrackLayout();
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit MediaControls(HTMLMediaElement&);
@@ skipping 15 matching lines @@
     bool shouldHideMediaControls(unsigned behaviorFlags = 0) const;
     void hideMediaControlsTimerFired(Timer<MediaControls>*);
     void startHideMediaControlsTimer();
     void stopHideMediaControlsTimer();
     void resetHideMediaControlsTimer();
 
     // Attempts to show the overlay cast button. If it is covered by another
     // element in the page, it will be hidden.
     void tryShowOverlayCastButton();
 
+    // For the new UI, hide elements that don't fit, and show those things
+    // that we want that do fit.
+    void scheduleUpdateControlsVisibilityForSpace();

[fs, 2015/07/08 09:31:00]

I don't know what the "ForSpace" suffix is supposed to mean, but I don't think
it adds much.

[liberato (no reviews please), 2015/07/09 12:10:56]

it was intended to mean "based on what fits".  i'll think of a new name.

+    void updateControlsVisibilityForSpace();
+
     // Node
     bool isMediaControls() const override { return true; }
     bool willRespondToMouseMoveEvents() override { return true; }
     void defaultEventHandler(Event*) override;
     bool containsRelatedTarget(Event*);
 
     RawPtrWillBeMember<HTMLMediaElement> m_mediaElement;
 
     // Media control elements.
     RawPtrWillBeMember<MediaControlOverlayEnclosureElement> m_overlayEnclosure;
@@ skipping 15 matching lines @@
     unsigned m_hideTimerBehaviorFlags;
     bool m_isMouseOverControls : 1;
     bool m_isPausedForScrubbing : 1;
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(MediaControls, isMediaControls());
 
 }
 
 #endif