Use a single layout for CreateShortcut activity.

The old layout is inherited from LauncherActivity, which uses a
inconsistent theme and UI between phone and tablet. It's more consistent
to just use a single layout that matches setting theme.

Fixes: 32220535
Test: runtest --path packages/apps/Settings/tests/app/src/com/android/settings/CreateShortcutTest.java
Change-Id: I769d1404c82c2057bf021e4cf557e7cf397d92a7

src/com/android/settings/CreateShortcut.java

@@ -85,6 +85,11 @@ public class CreateShortcut extends LauncherActivity {
         return false;
     }
 
+    @Override
+    protected void onSetContentView() {
+        setContentView(R.layout.activity_list);
+    }
+
     /**
      * Perform query on package manager for list items.  The default
      * implementation queries for activities.