Enable Hilt for picker app (3/3)

Bug: 288128417
Test: soong build, gradle build for 3 variants, launch WP
Change-Id: If9c97d30000de03c10ba6b43634ab31c45efdc75
diff --git a/Android.bp b/Android.bp
index f6c8558..9c9c222 100644
--- a/Android.bp
+++ b/Android.bp
@@ -82,6 +82,7 @@
         "androidx.lifecycle_lifecycle-viewmodel-ktx",
         "androidx.recyclerview_recyclerview",
         "SystemUICustomizationLib",
+        "hilt_android",
     ],
 
     jni_libs: [
diff --git a/src/com/android/customization/picker/CustomizationPickerApplication.java b/src_override/com/android/customization/picker/CustomizationPickerApplication.java
similarity index 80%
rename from src/com/android/customization/picker/CustomizationPickerApplication.java
rename to src_override/com/android/customization/picker/CustomizationPickerApplication.java
index 178cfbf..2e549ff 100644
--- a/src/com/android/customization/picker/CustomizationPickerApplication.java
+++ b/src_override/com/android/customization/picker/CustomizationPickerApplication.java
@@ -20,7 +20,13 @@
 import com.android.customization.module.ThemePickerInjector;
 import com.android.wallpaper.module.InjectorProvider;
 
-public class CustomizationPickerApplication extends Application {
+import dagger.hilt.android.HiltAndroidApp;
+
+/**
+ * Application subclass that initializes the injector.
+ */
+@HiltAndroidApp(Application.class)
+public class CustomizationPickerApplication extends Hilt_CustomizationPickerApplication {
     @Override
     public void onCreate() {
         super.onCreate();