Improve Toast RTL support

- use Locale from Context

Change-Id: Ic93bb6e3f9310d54d879c20754c9310154940565

Author: Fabrice Di Meglio

core/java/android/widget/Toast.java

@@ -376,8 +376,8 @@ public void handleShow() {
                 mWM = WindowManagerImpl.getDefault();
                 // We can resolve the Gravity here by using the Locale for getting
                 // the layout direction
-                final int layoutDirection = LocaleUtil.getLayoutDirectionFromLocale(
-                        Locale.getDefault());
+                final Locale locale = mView.getContext().getResources().getConfiguration().locale;
+                final int layoutDirection = LocaleUtil.getLayoutDirectionFromLocale(locale);
                 final int gravity = Gravity.getAbsoluteGravity(mGravity, layoutDirection);
                 mParams.gravity = gravity;
                 if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.FILL_HORIZONTAL) {