Send rotation suggestions to System UI when rotation locked

Test: manual
Change-Id: I6dd05c5367e4e2ea3a2d3a631709a5aed34a256e
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 7cfedc8..00eb778 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -512,6 +512,7 @@
                  Settings.Secure.SELECTED_INPUT_METHOD_SUBTYPE,
                  Settings.Secure.SETTINGS_CLASSNAME,
                  Settings.Secure.SHOW_NOTE_ABOUT_NOTIFICATION_HIDING, // candidate?
+                 Settings.Secure.SHOW_ROTATION_SUGGESTIONS,
                  Settings.Secure.SKIP_FIRST_USE_HINTS, // candidate?
                  Settings.Secure.SMS_DEFAULT_APPLICATION,
                  Settings.Secure.TRUST_AGENTS_INITIALIZED,