metrics: Add random delays to perf collection

chrome/browser/metrics/perf_provider_chromeos.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_METRICS_PERF_PROVIDER_CHROMEOS_H_
 #define CHROME_BROWSER_METRICS_PERF_PROVIDER_CHROMEOS_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 57 matching lines @@
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // Turns off perf collection. Does not delete any data that was already
   // collected and stored in |cached_perf_data_|.
   void Deactivate();
 
   // 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.
   void CollectIfNecessary(scoped_ptr<SampledProfile> sampled_profile);
 
   // Collects perf data on a repeating basis by calling CollectIfNecessary() and
   // 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.
   // |trigger_event| is the cause of the perf data collection.
   void ParseProtoIfValid(
       scoped_ptr<WindowedIncognitoObserver> incognito_observer,
       scoped_ptr<SampledProfile> sampled_profile,
       const std::vector<uint8>& data);
 
   // Vector of SampledProfile protobufs containing perf profiles.
@@ skipping 20 matching lines @@
 
   // To pass around the "this" pointer across threads safely.
   base::WeakPtrFactory<PerfProvider> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PerfProvider);
 };
 
 }  // namespace metrics
 
 #endif  // CHROME_BROWSER_METRICS_PERF_PROVIDER_CHROMEOS_H_