Add global property to store opt-in application package name.

We provide a way in developer option to opt-in an application to use updated
graphics driver. To make sure we set up the graphics environment correctly, we
need to access the package name of the selected application. This patch
introduces a global property to store the package name.

BUG: 119221883
Test: Build, flash and boot, verify with prototype
Change-Id: I49dfcccf387169c072fb9345f7a50c00fcdb0737
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 63dd59a..78d45d0 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -457,6 +457,7 @@
                     Settings.Global.GPU_DEBUG_LAYERS,
                     Settings.Global.GPU_DEBUG_LAYERS_GLES,
                     Settings.Global.ANGLE_ENABLED_APP,
+                    Settings.Global.UPDATED_GFX_DRIVER_DEV_OPT_IN_APP,
                     Settings.Global.GPU_DEBUG_LAYER_APP,
                     Settings.Global.ENABLE_GNSS_RAW_MEAS_FULL_TRACKING,
                     Settings.Global.INSTALL_CARRIER_APP_NOTIFICATION_PERSISTENT,