[BTS] Updating the histogram expiration

Bug: 1160779
Change-Id: I273f33b905ac886a5c192cf3fb0d1014f41109e2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2611330
Commit-Queue: Filip Gorski <fgorski@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Reviewed-by: Mark Pearson <mpearson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845289}

tools/metrics/histograms/histograms_xml/android/histograms.xml

@@ -170,14 +170,14 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskCanceled"
-    enum="BackgroundTaskId" expires_after="2021-01-31">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>fgorski@chromium.org</owner>
   <owner>nyquist@chromium.org</owner>
   <summary>Records that a specific background task has been canceled.</summary>
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskCreated.WithExpiration"
-    enum="BackgroundTaskId" expires_after="2021-06-06">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>ioanastefan@chromium.org</owner>
   <owner>nator@chromium.org</owner>
   <owner>knollr@chromium.org</owner>
@@ -188,7 +188,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskCreated.WithoutExpiration"
-    enum="BackgroundTaskId" expires_after="2021-06-06">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>ioanastefan@chromium.org</owner>
   <owner>nator@chromium.org</owner>
   <owner>knollr@chromium.org</owner>
@@ -199,7 +199,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskExpired"
-    enum="BackgroundTaskId" expires_after="2021-01-31">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>ioanastefan@chromium.org</owner>
   <owner>nator@chromium.org</owner>
   <owner>knollr@chromium.org</owner>
@@ -210,14 +210,17 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskLoadedNative"
-    enum="BackgroundTaskId" expires_after="2021-06-20">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>fgorski@chromium.org</owner>
   <owner>nyquist@chromium.org</owner>
-  <summary>Records that a specific background task has loaded native.</summary>
+  <summary>
+    Records that a task extending a NativeBackgroundTask started loading the
+    native portion of Chrome (either in Reduced Mode or Full Browser Mode).
+  </summary>
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskLoadedNative.FullBrowser"
-    enum="BackgroundTaskId" expires_after="2021-06-06">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>mheikal@chromium.org</owner>
   <owner>hanxi@chromium.org</owner>
   <owner>hnakashima@chromium.org</owner>
@@ -228,7 +231,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskLoadedNative.ReducedMode"
-    enum="BackgroundTaskId" expires_after="2021-06-06">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>mheikal@chromium.org</owner>
   <owner>hanxi@chromium.org</owner>
   <owner>hnakashima@chromium.org</owner>
@@ -238,7 +241,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskScheduled.Failure"
-    enum="BackgroundTaskId" expires_after="2021-06-06">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>fgorski@chromium.org</owner>
   <owner>nyquist@chromium.org</owner>
   <summary>
@@ -247,7 +250,7 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskScheduled.Success"
-    enum="BackgroundTaskId" expires_after="2021-06-06">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>fgorski@chromium.org</owner>
   <owner>nyquist@chromium.org</owner>
   <summary>
@@ -256,14 +259,14 @@ reviews. Googlers can read more about this at go/gwsq-gerrit.
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskStarted"
-    enum="BackgroundTaskId" expires_after="2021-07-11">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>fgorski@chromium.org</owner>
   <owner>nyquist@chromium.org</owner>
   <summary>Records that a specific background task has been started.</summary>
 </histogram>
 
 <histogram name="Android.BackgroundTaskScheduler.TaskStopped"
-    enum="BackgroundTaskId" expires_after="2021-01-31">
+    enum="BackgroundTaskId" expires_after="2021-12-01">
   <owner>fgorski@chromium.org</owner>
   <owner>nyquist@chromium.org</owner>
   <summary>