Hide video controls after touch when hideMediaControlsTimerFired fires.

LayoutTests/media/media-controls.js

 var captionsButtonElement;
 var captionsButtonCoordinates;
 
 // These reflect the values used to fade in/out the media controls. Should
 // mirror the values 'fadeInDuration'/'fadeOutDuration' in MediaControlElements.cpp.
 const controlsFadeInDurationMs = 100;
 const controlsFadeOutDurationMs = 300;
 
 // The timeout for the hide-after-no-mouse-movement behavior. Defined (and
 // should mirror) the value 'timeWithoutMouseMovementBeforeHidingMediaControls'
@@ skipping 102 matching lines @@
 }
 
 function clickCCButton()
 {
     consoleWrite("*** Click the CC button.");
     eventSender.mouseMoveTo(captionsButtonCoordinates[0], captionsButtonCoordinates[1]);
     eventSender.mouseDown();
     eventSender.mouseUp();
 }
 
-function runAfterControlsHidden(func, mediaElement)
+function runAfterHideMediaControlsTimerFired(func, mediaElement)
 {
     if (mediaElement.paused)
         throw "The media element is not playing";
 
     // Compute the time it'll take until the controls will be invisible -
     // assuming playback has been started prior to invoking this
     // function. Allow 500ms slack.
     var hideTimeoutMs = controlsMouseMovementTimeoutMs + controlsFadeOutDurationMs + 500;
 
     if (!mediaElement.loop && hideTimeoutMs >= 1000 * (mediaElement.duration - mediaElement.currentTime))
         throw "The media will end before the controls have been hidden";
 
     setTimeout(func, hideTimeoutMs);
 }