Remove manual menu creation from some fragments

Doing this programmatically is just a no-go when themes are being set
in some other places (the toolbar is using a custom theme, in this
case), so, instead of hunting down the proper theme, just let the
system do its work.

app/src/main/res/drawable/ic_settings_backup_restore.xml

@@ -1,9 +1,9 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="24dp"
     android:height="24dp"
-    android:tint="#FFFFFF"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
+    android:tint="@color/defaultIconTint"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
     <path
         android:fillColor="#FF000000"
         android:pathData="M14,12c0,-1.1 -0.9,-2 -2,-2s-2,0.9 -2,2 0.9,2 2,2 2,-0.9 2,-2zM12,3c-4.97,0 -9,4.03 -9,9L0,12l4,4 4,-4L5,12c0,-3.87 3.13,-7 7,-7s7,3.13 7,7 -3.13,7 -7,7c-1.51,0 -2.91,-0.49 -4.06,-1.3l-1.42,1.44C8.04,20.3 9.94,21 12,21c4.97,0 9,-4.03 9,-9s-4.03,-9 -9,-9z" />

app/src/main/res/menu/menu_chooser_fragment.xml

@@ -0,0 +1,8 @@
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/menu_item_restore_default"
+        android:title="@string/restore_defaults"
+        android:icon="@drawable/ic_settings_backup_restore"
+        app:showAsAction="always" />
+</menu>