Add feature flag for the new user interaction apis.

Bug: 267207535
Test: build
Change-Id: I90869334eb8e1351d59152f5468074e1b012651a
diff --git a/AconfigFlags.bp b/AconfigFlags.bp
index 5cfdeb9..1e42581 100644
--- a/AconfigFlags.bp
+++ b/AconfigFlags.bp
@@ -18,6 +18,7 @@
 
     // Add java_aconfig_libraries to here to add them to the core framework
     srcs: [
+        ":android.app.usage.flags-aconfig-java{.generated_srcjars}",
         ":android.os.flags-aconfig-java{.generated_srcjars}",
         ":android.security.flags-aconfig-java{.generated_srcjars}",
         ":camera_platform_flags_core_java_lib{.generated_srcjars}",
@@ -100,6 +101,19 @@
     defaults: ["framework-minus-apex-aconfig-java-defaults"],
 }
 
+// UsageStats
+aconfig_declarations {
+    name: "android.app.usage.flags-aconfig",
+    package: "android.app.usage",
+    srcs: ["core/java/android/app/usage/*.aconfig"],
+}
+
+java_aconfig_library {
+    name: "android.app.usage.flags-aconfig-java",
+    aconfig_declarations: "android.app.usage.flags-aconfig",
+    defaults: ["framework-minus-apex-aconfig-java-defaults"],
+}
+
 // OS
 aconfig_declarations {
     name: "android.os.flags-aconfig",