Ensure total runtime for time-limited FGS is in uptime base.

Bug: 330399444
Test: atest CtsFgsTimeoutTestCases
Change-Id: I71edd971bb3dbf7eef83ba030103c4de90ee8be9
diff --git a/services/core/java/com/android/server/am/ServiceRecord.java b/services/core/java/com/android/server/am/ServiceRecord.java
index 68f7cc1..865513b 100644
--- a/services/core/java/com/android/server/am/ServiceRecord.java
+++ b/services/core/java/com/android/server/am/ServiceRecord.java
@@ -683,6 +683,7 @@
         private long mLastFgsStartTime;
         @UptimeMillisLong
         private long mTimeLimitExceededAt = Long.MIN_VALUE;
+        @UptimeMillisLong
         private long mTotalRuntime = 0;
 
         TimeLimitedFgsInfo(@UptimeMillisLong long startTime) {
@@ -705,9 +706,10 @@
         }
 
         public void updateTotalRuntime() {
-            mTotalRuntime += SystemClock.elapsedRealtime() - mLastFgsStartTime;
+            mTotalRuntime += SystemClock.uptimeMillis() - mLastFgsStartTime;
         }
 
+        @UptimeMillisLong
         public long getTotalRuntime() {
             return mTotalRuntime;
         }