metrics: Add dbus interface for GetRandomPerfOutput

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 75 matching lines @@
   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. |num_tabs_restored| is the total
   // number of tabs being restored.
   void CollectPerfDataAfterSessionRestore(
       const base::TimeDelta& time_after_restore,
       int num_tabs_restored);
 
-  // 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.
+  // Parses a PerfDataProto from serialized data |perf_data|, if it exists.
+  // Parses a PerfStatProto from serialized data |perf_stat|, if it exists.
+  // |incognito_observer| indicates whether an incognito window had been opened
+  // during the profile collection period. If there was an incognito window,
+  // discard the incoming data.
   // |trigger_event| is the cause of the perf data collection.
-  void ParseProtoIfValid(
+  void ParseOutputProtoIfValid(
       scoped_ptr<WindowedIncognitoObserver> incognito_observer,
       scoped_ptr<SampledProfile> sampled_profile,
-      const std::vector<uint8>& data);
+      int result,

[Ilya Sherman, 2015/06/27 05:44:24]

Please document the |result|.

[Simon Que, 2015/06/30 05:28:09]

Done.

+      const std::vector<uint8>& perf_data,
+      const std::vector<uint8>& perf_stat);
 
   // Vector of SampledProfile protobufs containing perf profiles.
   std::vector<SampledProfile> cached_perf_data_;
 
   // For scheduling collection of perf data.
   base::OneShotTimer<PerfProvider> timer_;
 
   // For detecting when changes to the login state.
   LoginObserver login_observer_;
 
@@ skipping 16 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_