Media: lock orientation when <video> goes fullscreen.

third_party/WebKit/Source/core/html/shadow/MediaControls.cpp

 /*
  * 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 15 matching lines @@
 
 #include "core/html/shadow/MediaControls.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/ClientRect.h"
 #include "core/dom/Fullscreen.h"
 #include "core/events/MouseEvent.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/shadow/MediaControlsMediaEventListener.h"
+#include "core/html/shadow/MediaControlsOrientationLockDelegate.h"
 #include "core/html/shadow/MediaControlsWindowEventListener.h"
 #include "core/html/track/TextTrackContainer.h"
 #include "core/html/track/TextTrackList.h"
 #include "core/layout/LayoutObject.h"
 #include "core/layout/LayoutTheme.h"
 #include "platform/EventDispatchForbiddenScope.h"
 
 namespace blink {
 
 // If you change this value, then also update the corresponding value in
@@ skipping 74 matching lines @@
       m_toggleClosedCaptionsButton(nullptr),
       m_textTrackList(nullptr),
       m_overflowList(nullptr),
       m_castButton(nullptr),
       m_fullscreenButton(nullptr),
       m_downloadButton(nullptr),
       m_mediaEventListener(new MediaControlsMediaEventListener(this)),
       m_windowEventListener(MediaControlsWindowEventListener::create(
           this,
           WTF::bind(&MediaControls::hideAllMenus, wrapWeakPersistent(this)))),
+      m_orientationLockDelegate(nullptr),
       m_hideMediaControlsTimer(this,
                                &MediaControls::hideMediaControlsTimerFired),
       m_hideTimerBehaviorFlags(IgnoreNone),
       m_isMouseOverControls(false),
       m_isPausedForScrubbing(false),
       m_panelWidthChangedTimer(this,
                                &MediaControls::panelWidthChangedTimerFired),
       m_panelWidth(0),
       m_keepShowingUntilTimerFires(false) {}
 
 MediaControls* MediaControls::create(HTMLMediaElement& mediaElement) {
   MediaControls* controls = new MediaControls(mediaElement);
   controls->setShadowPseudoId(AtomicString("-webkit-media-controls"));
   controls->initializeControls();
+
+  // Initialize the orientation lock when going fullscreen feature.
+  if (RuntimeEnabledFeatures::videoFullscreenOrientationLockEnabled() &&
+      mediaElement.isHTMLVideoElement()) {
+    controls->m_orientationLockDelegate =
+        new MediaControlsOrientationLockDelegate(controls);
+  }
+
   return controls;
 }
 
 // The media controls DOM structure looks like:
 //
 // MediaControls
 //     (-webkit-media-controls)
 // +-MediaControlOverlayEnclosureElement
 // |    (-webkit-media-controls-overlay-enclosure)
 // | +-MediaControlOverlayPlayButtonElement
@@ skipping 765 matching lines @@
   visitor->trace(m_downloadButton);
   visitor->trace(m_durationDisplay);
   visitor->trace(m_enclosure);
   visitor->trace(m_textTrackList);
   visitor->trace(m_overflowMenu);
   visitor->trace(m_overflowList);
   visitor->trace(m_castButton);
   visitor->trace(m_overlayCastButton);
   visitor->trace(m_mediaEventListener);
   visitor->trace(m_windowEventListener);
+  visitor->trace(m_orientationLockDelegate);
   HTMLDivElement::trace(visitor);
 }
 
 }  // namespace blink