SetupWizard: Migrate to androidx

Change-Id: Iade6aeca1338c1e543d09aff83f8cf39d7c78e22

Android.mk

@@ -15,12 +15,7 @@ LOCAL_PRIVATE_PLATFORM_APIS := true
 LOCAL_PROGUARD_FLAG_FILES := proguard.flags
 
 LOCAL_STATIC_ANDROID_LIBRARIES := \
-    android-support-v4 \
-    android-support-v7-appcompat \
-    android-support-v7-preference \
-    android-support-v7-recyclerview \
-    android-support-v13 \
-    android-support-v14-preference
+    androidx.core_core
 
 LOCAL_STATIC_JAVA_LIBRARIES := \
     libphonenumber \

proguard.flags

@@ -9,4 +9,4 @@
 
 # Needed when building against the Marshmallow SDK
 -dontwarn org.apache.http.**
--dontwarn android.support.**
+-dontwarn androidx.**

src/org/lineageos/setupwizard/widget/ScrimInsetsFrameLayout.java

@@ -21,10 +21,11 @@ import android.content.res.TypedArray;
 import android.graphics.Canvas;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
-import android.support.v4.view.ViewCompat;
 import android.util.AttributeSet;
 import android.widget.FrameLayout;
 
+import androidx.core.view.ViewCompat;
+
 import org.lineageos.setupwizard.R;
 
 /**