Media Controls: use events to enter/exit fullscreen.

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

Index: third_party/WebKit/Source/core/html/shadow/MediaControls.cpp
diff --git a/third_party/WebKit/Source/core/html/shadow/MediaControls.cpp b/third_party/WebKit/Source/core/html/shadow/MediaControls.cpp
index bd03224eddbf5a30289fc42bcf28e9116ab52fdb..cf9626ce0095e2ee396c6529efbffd17b481c6bd 100644
--- a/third_party/WebKit/Source/core/html/shadow/MediaControls.cpp
+++ b/third_party/WebKit/Source/core/html/shadow/MediaControls.cpp
@@ -354,6 +354,7 @@ void MediaControls::reset() {
   onTextTracksAddedOrRemoved();
 
   m_fullscreenButton->setIsWanted(shouldShowFullscreenButton(mediaElement()));
+  m_fullscreenButton->setIsFullscreen(mediaElement().isFullscreen());
 
   refreshCastButtonVisibilityWithoutUpdate();
 
@@ -549,18 +550,6 @@ void MediaControls::exitFullscreen() {
   Fullscreen::exitFullscreen(document());
 }
 
-void MediaControls::enteredFullscreen() {
-  m_fullscreenButton->setIsFullscreen(true);
-  stopHideMediaControlsTimer();
-  startHideMediaControlsTimer();
-}
-
-void MediaControls::exitedFullscreen() {
-  m_fullscreenButton->setIsFullscreen(false);
-  stopHideMediaControlsTimer();
-  startHideMediaControlsTimer();
-}
-
 void MediaControls::startedCasting() {
   m_castButton->setIsPlayingRemotely(true);
   m_overlayCastButton->setIsPlayingRemotely(true);
@@ -760,6 +749,18 @@ void MediaControls::onLoadedMetadata() {
   reset();
 }
 
+void MediaControls::onEnteredFullscreen() {
+  m_fullscreenButton->setIsFullscreen(true);
+  stopHideMediaControlsTimer();
+  startHideMediaControlsTimer();
+}
+
+void MediaControls::onExitedFullscreen() {
+  m_fullscreenButton->setIsFullscreen(false);
+  stopHideMediaControlsTimer();
+  startHideMediaControlsTimer();
+}
+
 void MediaControls::notifyPanelWidthChanged(const LayoutUnit& newWidth) {
   // Don't bother to do any work if this matches the most recent panel
   // width, since we're called after layout.