metrics: Add random delays to perf collection

chrome/browser/metrics/perf_provider_chromeos.h

Index: chrome/browser/metrics/perf_provider_chromeos.h
diff --git a/chrome/browser/metrics/perf_provider_chromeos.h b/chrome/browser/metrics/perf_provider_chromeos.h
index 8f1ac2f830a0bef4d3fdb0055923a91ae695cc94..9b380e4f137af6b877aa262102d6226f561703d7 100644
--- a/chrome/browser/metrics/perf_provider_chromeos.h
+++ b/chrome/browser/metrics/perf_provider_chromeos.h
@@ -75,7 +75,7 @@ class PerfProvider : public base::NonThreadSafe,
   // Selects a random time in the upcoming profiling interval that begins at
   // |next_profiling_interval_start_|. Schedules |timer_| to invoke
   // DoPeriodicCollection() when that time comes.
-  void ScheduleCollection();
+  void ScheduleIntervalCollection();
 
   // Collects perf data for a given |trigger_event|. Calls perf via the ChromeOS
   // debug daemon's dbus interface.
@@ -85,6 +85,17 @@ class PerfProvider : public base::NonThreadSafe,
   // reschedules it to be collected again.
   void DoPeriodicCollection();
 
+  // Collects perf data after a resume. |sleep_duration| is the duration the
+  // system was suspended before resuming. |time_after_resume_ms| is how long
+  // ago the system resumed.
+  void CollectPerfDataAfterResume(const base::TimeDelta& sleep_duration,
+                                  const base::TimeDelta& time_after_resume);
+
+  // Collects perf data after a session restore. |time_after_restore| is how
+  // long ago the session restore started.
+  void CollectPerfDataAfterSessionRestore(
+      const base::TimeDelta& time_after_restore);
+
   // Parses a perf data protobuf from the |data| passed in only if the
   // |incognito_observer| indicates that no incognito window had been opened
   // during the profile collection period.