Ensure media control goes to transparent(hide) after seek by touch

Source/core/html/shadow/MediaControls.h

Index: Source/core/html/shadow/MediaControls.h
diff --git a/Source/core/html/shadow/MediaControls.h b/Source/core/html/shadow/MediaControls.h
index 18234b7c5f29d6588a82cb054c211926062defd1..85597c9f555b536687b0411677d94d8a936ddef7 100644
--- a/Source/core/html/shadow/MediaControls.h
+++ b/Source/core/html/shadow/MediaControls.h
@@ -85,6 +85,7 @@ private:
     void updatePlayState();
 
     enum HideBehaviorFlags {
+        IgnoreNone = 0,
         IgnoreVideoHover = 1 << 0,
         IgnoreFocus = 1 << 1,
         IgnoreControlsHover = 1 << 2
@@ -92,7 +93,7 @@ private:
 
     bool shouldHideMediaControls(unsigned behaviorFlags = 0) const;
     void hideMediaControlsTimerFired(Timer<MediaControls>*);
-    void startHideMediaControlsTimer();
+    void startHideMediaControlsTimer(unsigned behaviorFlags = IgnoreNone);
     void stopHideMediaControlsTimer();
     void resetHideMediaControlsTimer();
 
@@ -134,9 +135,9 @@ private:
     RawPtrWillBeMember<MediaControlPanelEnclosureElement> m_enclosure;
 
     Timer<MediaControls> m_hideMediaControlsTimer;
+    unsigned m_hideTimerBehaviorFlags;
     bool m_isMouseOverControls : 1;
     bool m_isPausedForScrubbing : 1;
-    bool m_wasLastEventTouch : 1;
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(MediaControls, isMediaControls());