DO NOT MERGE - Fix build by updating access to display refresh rate.

Change-Id: Ie0f49226586c9cdecd9fdcf660d60685d48c8c13
(cherry picked from commit 14518fe8324965a73cf9e22ef494fce0915f276b)

src/com/android/fmradio/views/FmScroller.java

@@ -719,7 +719,7 @@ public class FmScroller extends FrameLayout {
         private float getRefreshRate() {
             DisplayInfo di = DisplayManagerGlobal.getInstance().getDisplayInfo(
                     Display.DEFAULT_DISPLAY);
-            return di.refreshRate;
+            return di.getMode().getRefreshRate();
         }
 
         public long getFrameIntervalMs() {