Expose input region monitoring to system components.

This is to allow SysUI to detect system-wide gestures.

Test: manual
Bug: 123748692
Change-Id: Ic1e2cd6afea219d0e20b29e7150c9a42b75c7a67
diff --git a/Android.bp b/Android.bp
index b9b1bd8..5b8e6e1 100644
--- a/Android.bp
+++ b/Android.bp
@@ -375,6 +375,7 @@
         "core/java/android/view/IDisplayFoldListener.aidl",
         "core/java/android/view/IGraphicsStats.aidl",
         "core/java/android/view/IGraphicsStatsCallback.aidl",
+        "core/java/android/view/IInputMonitorHost.aidl",
         "core/java/android/view/IInputFilter.aidl",
         "core/java/android/view/IInputFilterHost.aidl",
         "core/java/android/view/IOnKeyguardExitResult.aidl",