Introduce ChromeStabilityMetricsProvider

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/process/kill.h"
 #include "base/threading/thread_checker.h"
 #include "base/time/time.h"
 #include "chrome/browser/metrics/metrics_log.h"
 #include "chrome/browser/metrics/tracking_synchronizer_observer.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"
 #include "content/public/browser/browser_child_process_observer.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/user_metrics.h"
 #include "net/url_request/url_fetcher_delegate.h"
 
 class GoogleUpdateMetricsProviderWin;
 class MetricsReportingScheduler;
 class PrefService;
 class PrefRegistrySimple;
 
 namespace base {
 class DictionaryValue;
 class HistogramSamples;
 class MessageLoopProxy;
 }
 
 namespace variations {
 struct ActiveGroupId;
 }
 
 namespace content {
-class RenderProcessHost;
-class WebContents;
 struct WebPluginInfo;
 }
 
 namespace metrics {
 class MetricsServiceClient;
 class MetricsStateManager;
 }
 
 namespace net {
 class URLFetcher;
@@ skipping 20 matching lines @@
   // 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,
       public content::BrowserChildProcessObserver,
-      public content::NotificationObserver,
       public net::URLFetcherDelegate {
  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,
@@ skipping 50 matching lines @@
   // If metrics reporting is enabled, this method returns an entropy provider
   // that has a high source of entropy, partially based on the client ID.
   // Otherwise, it returns an entropy provider that is based on a low entropy
   // source.
   scoped_ptr<const base::FieldTrial::EntropyProvider> CreateEntropyProvider();
 
   // At startup, prefs needs to be called with a list of all the pref names and
   // types we'll be using.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
-  // Set up notifications which indicate that a user is performing work. This is
-  // useful to allow some features to sleep, until the machine becomes active,
-  // such as precluding UMA uploads unless there was recent activity.
-  static void SetUpNotifications(content::NotificationRegistrar* registrar,
-                                 content::NotificationObserver* observer);
-
   // HistogramFlattener:
   virtual void RecordDelta(const base::HistogramBase& histogram,
                            const base::HistogramSamples& snapshot) OVERRIDE;
   virtual void InconsistencyDetected(
       base::HistogramBase::Inconsistency problem) OVERRIDE;
   virtual void UniqueInconsistencyDetected(
       base::HistogramBase::Inconsistency problem) OVERRIDE;
   virtual void InconsistencyDetectedInLoggedCount(int amount) OVERRIDE;
 
   // Implementation of content::BrowserChildProcessObserver
   virtual void BrowserChildProcessHostConnected(
       const content::ChildProcessData& data) OVERRIDE;
   virtual void BrowserChildProcessCrashed(
       const content::ChildProcessData& data) OVERRIDE;
   virtual void BrowserChildProcessInstanceCreated(
       const content::ChildProcessData& data) OVERRIDE;
 
-  // content::NotificationObserver:
-  virtual void Observe(int type,
-                       const content::NotificationSource& source,
-                       const content::NotificationDetails& details) OVERRIDE;
-
   // This should be called when the application is not idle, i.e. the user seems
   // to be interacting with the application.
   void OnApplicationNotIdle();
 
   // Invoked when we get a WM_SESSIONEND. This places a value in prefs that is
   // reset when RecordCompletedSessionEnd is invoked.
   void RecordStartOfSessionEnd();
 
   // This should be called when the application is shutting down. It records
   // that session end was successful.
@@ skipping 199 matching lines @@
   // completes (either successfully or with failure).
   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
 
   // Reads, increments and then sets the specified integer preference.
   void IncrementPrefValue(const char* path);
 
   // Reads, increments and then sets the specified long preference that is
   // stored as a string.
   void IncrementLongPrefsValue(const char* path);
 
-  // Records a renderer process crash.
-  void LogRendererCrash(content::RenderProcessHost* host,
-                        base::TerminationStatus status,
-                        int exit_code);
-
-  // Records a renderer process hang.
-  void LogRendererHang();
-
   // Records that the browser was shut down cleanly.
   void LogCleanShutdown();
 
   // Returns reference to ChildProcessStats corresponding to |data|.
   ChildProcessStats& GetChildProcessStats(
       const content::ChildProcessData& data);
 
   // Saves plugin-related updates from the in-object buffer to Local State
   // for retrieval next time we send a Profile log (generally next launch).
   void RecordPluginChanges(PrefService* pref);
 
   // Records state that should be periodically saved, like uptime and
   // buffered plugin stability statistics.
   void RecordCurrentState(PrefService* pref);
 
-  // Logs the initiation of a page load and uses |web_contents| to do
-  // additional logging of the type of page loaded.
-  void LogLoadStarted(content::WebContents* web_contents);
-
   // Checks whether events should currently be logged.
   bool ShouldLogEvents();
 
   // Sets the value of the specified path in prefs and schedules a save.
   void RecordBooleanPrefValue(const char* path, bool value);
 
   // Returns true if process of type |type| should be counted as a plugin
   // process, and false otherwise.
   static bool IsPluginProcess(int process_type);
 
@@ skipping 25 matching lines @@
 
   // Used to interact with the embedder. Weak pointer; must outlive |this|
   // instance.
   metrics::MetricsServiceClient* const client_;
 
   // Registered metrics providers.
   ScopedVector<metrics::MetricsProvider> metrics_providers_;
 
   base::ActionCallback action_callback_;
 
-  content::NotificationRegistrar registrar_;
-
   // Indicate whether recording and reporting are currently happening.
   // These should not be set directly, but by calling SetRecording and
   // SetReporting.
   bool recording_active_;
   bool reporting_active_;
 
   // Indicate whether test mode is enabled, where the initial log should never
   // be cut, and logs are neither persisted nor uploaded.
   bool test_mode_active_;
 
@@ skipping 83 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_