Convert video-controls-[captions, overlay, track]* tests to testharness.js

third_party/WebKit/LayoutTests/media/media-controls.js

 var captionsButtonElement;
 var captionsButtonCoordinates;
 
 // As specified in mediaControls.css, this is how long it takes to fade out controls
 const controlsFadeOutDurationMs = 300;
 
 // The timeout for the hide-after-no-mouse-movement behavior. Defined (and
 // should mirror) the value 'timeWithoutMouseMovementBeforeHidingMediaControls'
 // in MediaControls.cpp.
 const controlsMouseMovementTimeoutMs = 3000;
@@ skipping 156 matching lines @@
 }
 
 function selectTextTrack(video, index)
 {
     clickCCButton();
     var trackListItemElement = textTrackListItemAtIndex(video, index);
     var trackListItemCoordinates = elementCoordinates(trackListItemElement);
     clickAtCoordinates(trackListItemCoordinates[0], trackListItemCoordinates[1]);
 }
 
+function selectTextTrackAtIndex(video, index)
+{
+    var captionsButtonCoordinates = mediaControlsButtonCoordinates(video, "toggle-closed-captions-button");
+    clickAtCoordinates(captionsButtonCoordinates[0], captionsButtonCoordinates[1]);
+    var trackListItemElement = textTrackListItemAtIndex(video, index);
+    var trackListItemCoordinates = elementCoordinates(trackListItemElement);
+    clickAtCoordinates(trackListItemCoordinates[0], trackListItemCoordinates[1]);
+}
+
 function turnClosedCaptionsOff(video)
 {
-    selectTextTrack(video, -1);
+    selectTextTrackAtIndex(video, -1);
 }
 
 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);
 }