Add Device Owner disclosure to Add Accounts dialog

This CL adds a footer to the Add Accounts dialog that tells the user
when the device is managed by a Device Owner app.

Bug: 32692748
Test: make RunSettingsRoboTests

Change-Id: I0dd161eb0bbbc87c04692d4fa6547bd41dab05e0

src/com/android/settings/enterprise/DevicePolicyManagerWrapperImpl.java

@@ -32,6 +32,11 @@ public class DevicePolicyManagerWrapperImpl implements DevicePolicyManagerWrappe
         return mDpm.getDeviceOwnerComponentOnAnyUser();
     }
 
+    @Override
+    public CharSequence getDeviceOwnerOrganizationName() {
+        return mDpm.getDeviceOwnerOrganizationName();
+    }
+
     @Override
     public int getPermissionGrantState(@Nullable ComponentName admin, String packageName,
             String permission) {