Refactor textTractDisplayElement utility function

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

Index: third_party/WebKit/LayoutTests/media/media-controls.js
diff --git a/third_party/WebKit/LayoutTests/media/media-controls.js b/third_party/WebKit/LayoutTests/media/media-controls.js
index d4c690b3861902a0dfe5b7ea16ed43335a7dda81..0eb0b03562f06a905ce84cfc3403fb6671c59828 100644
--- a/third_party/WebKit/LayoutTests/media/media-controls.js
+++ b/third_party/WebKit/LayoutTests/media/media-controls.js
@@ -88,10 +88,20 @@ function textTrackCueElementByIndex(parentElement, cueIndex) {
     return displayElement;
 }
 
+function textTrackRegionElement(parentElement)
+{
+    var containerElement = textTrackContainerElement(parentElement);
+    return mediaControlsElement(containerElement.firstChild, "-webkit-media-text-track-region");
+}
+
+function textTrackRegionContainerElement(parentElement)
+{
+    var containerElement = textTrackContainerElement(parentElement);
+    return mediaControlsElement(containerElement.firstChild, "-webkit-media-text-track-region-container");
+}
+
 // TODO(srirama.m): Phase out the uses of this function and
 // replace with more specific functions at each call site.
-// For ex: textTrackDisplayElement(video, 'region') => textTrackRegionElement(video) and
-// textTrackDisplayElement(video, 'region-container') => textTrackRegionContainerElement(video).
 function textTrackDisplayElement(parentElement, id, cueNumber)
 {
     var containerElement = textTrackContainerElement(parentElement);