Merge "Add logging for ambient light." into tm-qpr-dev am: fd8565ceb1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20300181

Change-Id: Ia0d3ad55fe9ffe7eb2718a77ba58ac9f711e64f9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

services/core/java/com/android/server/display/AmbientBrightnessStatsTracker.java

@@ -27,6 +27,7 @@ import android.util.TypedXmlSerializer;
 import android.util.Xml;
 
 import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.util.FrameworkStatsLog;
 
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
@@ -287,6 +288,14 @@ public class AmbientBrightnessStatsTracker {
                     localDate)) {
                 return lastBrightnessStats;
             } else {
+                // It is a new day, and we have available data, so log data. The daily boundary
+                // might not be right if the user changes timezones but that is fine, since it
+                // won't be that frequent.
+                if (lastBrightnessStats != null) {
+                    FrameworkStatsLog.write(FrameworkStatsLog.AMBIENT_BRIGHTNESS_STATS_REPORTED,
+                            lastBrightnessStats.getStats(),
+                            lastBrightnessStats.getBucketBoundaries());
+                }
                 AmbientBrightnessDayStats dayStats = new AmbientBrightnessDayStats(localDate,
                         BUCKET_BOUNDARIES_FOR_NEW_STATS);
                 if (userStats.size() == MAX_DAYS_TO_TRACK) {