Move initial metrics gathering tasks out of MetricsService.

chrome/browser/metrics/metrics_service.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.
 
 // This file defines a service that collects information about the user
 // experience in order to help improve future versions of the app.
 
 #ifndef CHROME_BROWSER_METRICS_METRICS_SERVICE_H_
 #define CHROME_BROWSER_METRICS_METRICS_SERVICE_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
-#include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/memory/weak_ptr.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_flattener.h"
 #include "base/metrics/histogram_snapshot_manager.h"
 #include "base/metrics/user_metrics.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
-#include "chrome/browser/metrics/tracking_synchronizer_observer.h"
 #include "components/metrics/metrics_log.h"
 #include "components/metrics/metrics_log_manager.h"
 #include "components/metrics/metrics_provider.h"
 #include "components/metrics/metrics_service_observer.h"
 #include "components/variations/active_field_trials.h"
 
-class GoogleUpdateMetricsProviderWin;
 class MetricsReportingScheduler;
 class PrefService;
 class PrefRegistrySimple;
-class PluginMetricsProvider;
-class ProfilerMetricsProvider;
 
 namespace base {
 class DictionaryValue;
 class HistogramSamples;
 class MessageLoopProxy;
 class PrefService;
 }
 
 namespace variations {
 struct ActiveGroupId;
@@ skipping 29 matching lines @@
  private:
   friend class MetricsService;
   FRIEND_TEST_ALL_PREFIXES(MetricsServiceTest, RegisterSyntheticTrial);
 
   // This constructor is private specifically so as to control which code is
   // able to access it. New code that wishes to use it should be added as a
   // friend class.
   SyntheticTrialGroup(uint32 trial, uint32 group);
 };
 
-class MetricsService
-    : public base::HistogramFlattener,
-      public chrome_browser_metrics::TrackingSynchronizerObserver {
+class MetricsService : public base::HistogramFlattener {
  public:
   // The execution phase of the browser.
   enum ExecutionPhase {
     UNINITIALIZED_PHASE = 0,
     START_METRICS_RECORDING = 100,
     CREATE_PROFILE = 200,
     STARTUP_TIMEBOMB_ARM = 300,
     THREAD_WATCHER_START = 400,
     MAIN_MESSAGE_LOOP_RUN = 500,
     SHUTDOWN_TIMEBOMB_ARM = 600,
@@ skipping 96 matching lines @@
   // This count is eventually send via UMA logs.
   void RecordBreakpadRegistration(bool success);
 
   // Saves in the preferences if the browser is running under a debugger.
   // This count is eventually send via UMA logs.
   void RecordBreakpadHasDebugger(bool has_debugger);
 
   bool recording_active() const;
   bool reporting_active() const;
 
-  // TODO(blundell): Move this to ChromeMetricsServiceClient.
-  void LogPluginLoadingError(const base::FilePath& plugin_path);
-
   // Redundant test to ensure that we are notified of a clean exit.
   // This value should be true when process has completed shutdown.
   static bool UmaMetricsProperlyShutdown();
 
   // Registers a field trial name and group to be used to annotate a UMA report
   // with a particular Chrome configuration state. A UMA report will be
   // annotated with this trial group if and only if all events in the report
   // were created after the trial is registered. Only one group name may be
   // registered at a time for a given trial_name. Only the last group name that
   // is registered for a given trial name will be recorded. The values passed
@@ skipping 32 matching lines @@
   enum ShutdownCleanliness {
     CLEANLY_SHUTDOWN = 0xdeadbeef,
     NEED_TO_SHUTDOWN = ~CLEANLY_SHUTDOWN
   };
 
   typedef std::vector<SyntheticTrialGroup> SyntheticTrialGroups;
 
   // Calls into the client to start metrics gathering.
   void StartGatheringMetrics();
 
-  // Callback that continues the init task by loading plugin information.
-  void OnInitTaskGotHardwareClass();
-
-  // Called after the Plugin init task has been completed that continues the
-  // init task by launching a task to gather Google Update statistics.
-  void OnInitTaskGotPluginInfo();
-
-  // Called after GoogleUpdate init task has been completed that continues the
-  // init task by loading profiler data.
-  void OnInitTaskGotGoogleUpdateData();
+  // Callback that moves the state to INIT_TASK_DONE. When this is called, the
+  // state should be INIT_TASK_SCHEDULED.
+  void FinishedGatheringInitialMetrics();
 
   void OnUserAction(const std::string& action);
 
-  // TrackingSynchronizerObserver:
-  virtual void ReceivedProfilerData(
-      const tracked_objects::ProcessDataSnapshot& process_data,
-      int process_type) OVERRIDE;
-  // Callback that moves the state to INIT_TASK_DONE.
-  virtual void FinishedReceivingProfilerData() OVERRIDE;
-
   // Get the amount of uptime since this process started and since the last
   // call to this function.  Also updates the cumulative uptime metric (stored
   // as a pref) for uninstall.  Uptimes are measured using TimeTicks, which
   // guarantees that it is monotonic and does not jump if the user changes
   // his/her clock.  The TimeTicks implementation also makes the clock not
   // count time the computer is suspended.
   void GetUptimes(PrefService* pref,
                   base::TimeDelta* incremental_uptime,
                   base::TimeDelta* uptime);
 
@@ skipping 133 matching lines @@
   // be cut, and logs are neither persisted nor uploaded.
   bool test_mode_active_;
 
   // The progression of states made by the browser are recorded in the following
   // state.
   State state_;
 
   // Whether the initial stability log has been recorded during startup.
   bool has_initial_stability_log_;
 
-  ProfilerMetricsProvider* profiler_metrics_provider_;
-
-#if defined(ENABLE_PLUGINS)
-  PluginMetricsProvider* plugin_metrics_provider_;
-#endif
-
-#if defined(OS_WIN)
-  GoogleUpdateMetricsProviderWin* google_update_metrics_provider_;
-#endif
-
   // The initial metrics log, used to record startup metrics (histograms and
   // profiler data). Note that if a crash occurred in the previous session, an
   // initial stability log may be sent before this.
   scoped_ptr<MetricsLog> initial_metrics_log_;
 
   // Instance of the helper class for uploading logs.
   scoped_ptr<metrics::MetricsLogUploader> log_uploader_;
 
   // Whether there is a current log upload in progress.
   bool log_upload_in_progress_;
@@ skipping 42 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(MetricsServiceTest, IsPluginProcess);
   FRIEND_TEST_ALL_PREFIXES(MetricsServiceTest, MetricsServiceObserver);
   FRIEND_TEST_ALL_PREFIXES(MetricsServiceTest,
                            PermutedEntropyCacheClearedWhenLowEntropyReset);
   FRIEND_TEST_ALL_PREFIXES(MetricsServiceTest, RegisterSyntheticTrial);
 
   DISALLOW_COPY_AND_ASSIGN(MetricsService);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_SERVICE_H_