configureTextTrackDisplay 1216 Source/core/html/HTMLMediaElement.cpp     configureTextTrackDisplay(AssumeVisibleChange);
configureTextTrackDisplay 3138 Source/core/html/HTMLMediaElement.cpp         configureTextTrackDisplay(AssumeNoVisibleChange);
configureTextTrackDisplay  214 Source/core/html/HTMLMediaElement.h     void configureTextTrackDisplay(VisibilityChangeAssumption);