Not using magic constants for navbar height

Change-Id: I6783b8a2ebb059ce35748d8c3e818cbe732ff40d
diff --git a/src/com/android/launcher3/InvariantDeviceProfile.java b/src/com/android/launcher3/InvariantDeviceProfile.java
index 819a551..8a8a2fb 100644
--- a/src/com/android/launcher3/InvariantDeviceProfile.java
+++ b/src/com/android/launcher3/InvariantDeviceProfile.java
@@ -210,7 +210,7 @@
         iconSize = interpolatedDisplayOption.iconSize;
         iconShapePath = getIconShapePath(context);
         landscapeIconSize = interpolatedDisplayOption.landscapeIconSize;
-        iconBitmapSize = Utilities.pxFromDp(iconSize, dm);
+        iconBitmapSize = ResourceUtils.pxFromDp(iconSize, dm);
         iconTextSize = interpolatedDisplayOption.iconTextSize;
         fillResIconDpi = getLauncherIconDensity(iconBitmapSize);