Remove unnecessary refreshCastButtonVisibility call

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 59130b1b36501da528f69e49364e465b717a998c..77eae3345eea6e0d320fa875ed0bc4eef1b6f189 100644
--- a/third_party/WebKit/LayoutTests/media/media-controls.js
+++ b/third_party/WebKit/LayoutTests/media/media-controls.js
@@ -9,6 +9,14 @@ const controlsFadeOutDurationMs = 300;
 // in MediaControls.cpp.
 const controlsMouseMovementTimeoutMs = 3000;
 
+function castButton(videoElement) {
+    var controlID = '-internal-media-controls-cast-button';
+    var button = mediaControlsElement(window.internals.shadowRoot(videoElement).firstChild, controlID);
+    if (!button)
+        throw 'Failed to find cast button';
+    return button;
+}
+
 function overlayCastButton(videoElement)
 {
     var controlID = '-internal-media-controls-overlay-cast-button';