Merge "Use ISO 8601 format for LocalLog local timestamps" am: 172fd44b2f am: 22ed1a7a79 am: 218b1d80e4

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1878440

Change-Id: I8848a0d7a1e256b3cb71188137ab51a8a1c829b3

core/java/android/util/LocalLog.java

@@ -22,6 +22,7 @@ import android.os.SystemClock;
 
 import java.io.FileDescriptor;
 import java.io.PrintWriter;
+import java.time.Duration;
 import java.time.Instant;
 import java.time.LocalDateTime;
 import java.util.ArrayDeque;
@@ -63,7 +64,8 @@ public final class LocalLog {
         if (mUseLocalTimestamps) {
             logLine = LocalDateTime.now() + " - " + msg;
         } else {
-            logLine = SystemClock.elapsedRealtime() + " / " + Instant.now() + " - " + msg;
+            logLine = Duration.ofMillis(SystemClock.elapsedRealtime())
+                    + " / " + Instant.now() + " - " + msg;
         }
         append(logLine);
     }