Remove virtual where not needed in TextTrackCue

Source/core/html/shadow/MediaControlElements.cpp

Index: Source/core/html/shadow/MediaControlElements.cpp
diff --git a/Source/core/html/shadow/MediaControlElements.cpp b/Source/core/html/shadow/MediaControlElements.cpp
index 5c24e2c20272018bc39bea438f20b58c2bcaad18..548f0e0eeb1169c0d6b4f7f2f7b3d6f48bf38c3d 100644
--- a/Source/core/html/shadow/MediaControlElements.cpp
+++ b/Source/core/html/shadow/MediaControlElements.cpp
@@ -792,12 +792,6 @@ void MediaControlTextTrackContainerElement::updateSizes(bool forceUpdate)
         m_fontSize = fontSize;
         setInlineStyleProperty(CSSPropertyFontSize, fontSize, CSSPrimitiveValue::CSS_PX);
     }
-
-    CueList activeCues = mediaElement->currentlyActiveCues();
-    for (size_t i = 0; i < activeCues.size(); ++i) {
-        TextTrackCue* cue = activeCues[i].data();
-        cue->videoSizeDidChange(m_videoDisplaySize.size());
-    }
 }
 
 // ----------------------------