media_controls: Add UI for showing a promo bubble on a control button.

third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.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 16 matching lines @@
 #ifndef MediaControlsImpl_h
 #define MediaControlsImpl_h
 
 #include "core/html/HTMLDivElement.h"
 #include "core/html/media/MediaControls.h"
 #include "modules/ModulesExport.h"
 
 namespace blink {
 
 class Event;
+class MediaControlButtonPromoContainer;
 class MediaControlsMediaEventListener;
 class MediaControlsOrientationLockDelegate;
 class MediaControlsRotateToFullscreenDelegate;
 class MediaControlsWindowEventListener;
 class MediaControlCastButtonElement;
 class MediaControlCurrentTimeDisplayElement;
+class MediaControlDownloadButtonContainer;
 class MediaControlDownloadButtonElement;
 class MediaControlFullscreenButtonElement;
 class MediaControlMuteButtonElement;
 class MediaControlOverflowMenuButtonElement;
 class MediaControlOverflowMenuListElement;
 class MediaControlOverlayEnclosureElement;
 class MediaControlOverlayPlayButtonElement;
 class MediaControlPanelElement;
 class MediaControlPanelEnclosureElement;
 class MediaControlPlayButtonElement;
@@ skipping 150 matching lines @@
   void OnPlaying();
   void OnPause();
   void OnTextTracksAddedOrRemoved();
   void OnTextTracksChanged();
   void OnError();
   void OnLoadedMetadata();
   void OnEnteredFullscreen();
   void OnExitedFullscreen();
   void OnPanelKeypress();
 
+  void CreateDownloadButtonPromoUI();
+  void UpdateDownloadButtonWantedState();
+
   // Media control elements.
   Member<MediaControlOverlayEnclosureElement> overlay_enclosure_;
   Member<MediaControlOverlayPlayButtonElement> overlay_play_button_;
   Member<MediaControlCastButtonElement> overlay_cast_button_;
   Member<MediaControlPanelEnclosureElement> enclosure_;
   Member<MediaControlPanelElement> panel_;
   Member<MediaControlPlayButtonElement> play_button_;
   Member<MediaControlTimelineElement> timeline_;
   Member<MediaControlCurrentTimeDisplayElement> current_time_display_;
   Member<MediaControlRemainingTimeDisplayElement> duration_display_;
   Member<MediaControlMuteButtonElement> mute_button_;
   Member<MediaControlVolumeSliderElement> volume_slider_;
   Member<MediaControlToggleClosedCaptionsButtonElement>
       toggle_closed_captions_button_;
   Member<MediaControlTextTrackListElement> text_track_list_;
   Member<MediaControlOverflowMenuButtonElement> overflow_menu_;
   Member<MediaControlOverflowMenuListElement> overflow_list_;
 
   Member<MediaControlCastButtonElement> cast_button_;
   Member<MediaControlFullscreenButtonElement> fullscreen_button_;
+
+  Member<MediaControlDownloadButtonContainer> download_button_container_;
   Member<MediaControlDownloadButtonElement> download_button_;
+  // The promo UI for the download button is lazily created if the UI needs to
+  // be shown.
+  Member<MediaControlButtonPromoContainer> download_promo_container_;
 
   Member<MediaControlsMediaEventListener> media_event_listener_;
   Member<MediaControlsWindowEventListener> window_event_listener_;
   Member<MediaControlsOrientationLockDelegate> orientation_lock_delegate_;
   Member<MediaControlsRotateToFullscreenDelegate>
       rotate_to_fullscreen_delegate_;
 
   TaskRunnerTimer<MediaControlsImpl> hide_media_controls_timer_;
   unsigned hide_timer_behavior_flags_;
   bool is_mouse_over_controls_ : 1;
@@ skipping 11 matching lines @@
   IntSize size_;
 
   bool keep_showing_until_timer_fires_ : 1;
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(MediaControlsImpl, IsMediaControls());
 
 }  // namespace blink
 
 #endif