Implement the getUuid() callback function

Bug: 247124878
Test: compilation and manual test
Change-Id: I950f7e02377aa2bedeb357c3f205ededde071df4

Android.bp

@@ -212,7 +212,7 @@ java_library {
         "android.hardware.contexthub-V1.0-java",
         "android.hardware.contexthub-V1.1-java",
         "android.hardware.contexthub-V1.2-java",
-        "android.hardware.contexthub-V2-java",
+        "android.hardware.contexthub-V3-java",
         "android.hardware.gnss-V1.0-java",
         "android.hardware.gnss-V2.1-java",
         "android.hardware.health-V1.0-java-constants",

services/core/java/com/android/server/location/contexthub/IContextHubWrapper.java

@@ -421,6 +421,9 @@ public abstract class IContextHubWrapper {
                 android.hardware.contexthub.IContextHubCallback.Stub {
             private final int mContextHubId;
             private final ICallback mCallback;
+            // 9a17008d-6bf1-445a-9011-6d21bd985b6c
+            private static final byte[] UUID = {-102, 23, 0, -115, 107, -15, 68, 90,
+                                                -112, 17, 109, 33, -67, -104, 91, 108};
 
             ContextHubAidlCallback(int contextHubId, ICallback callback) {
                 mContextHubId = contextHubId;
@@ -463,6 +466,10 @@ public abstract class IContextHubWrapper {
                 // TODO(271471342): Implement
             }
 
+            public byte[] getUuid() {
+                return UUID;
+            }
+
             @Override
             public String getInterfaceHash() {
                 return android.hardware.contexthub.IContextHubCallback.HASH;