Move more metrics classes to metrics namespace.

components/metrics/metrics_log.h

 // Copyright 2014 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 set of user experience metrics data recorded by
 // the MetricsService.  This is the unit of data that is sent to the server.
 
 #ifndef COMPONENTS_METRICS_METRICS_LOG_H_
 #define COMPONENTS_METRICS_METRICS_LOG_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/time/time.h"
 #include "components/metrics/proto/chrome_user_metrics_extension.pb.h"
 
 class PrefRegistrySimple;
 class PrefService;
 
 namespace base {
 class DictionaryValue;
 class HistogramSamples;
 }
 
 namespace content {
 struct WebPluginInfo;
 }
 
-namespace metrics {
-class MetricsProvider;
-class MetricsServiceClient;
-}
-
 namespace tracked_objects {
 struct ProcessDataSnapshot;
 }
 
 namespace variations {
 struct ActiveGroupId;
 }
 
+namespace metrics {
+
+class MetricsProvider;
+class MetricsServiceClient;
+
 class MetricsLog {
  public:
   enum LogType {
     INITIAL_STABILITY_LOG,  // The initial log containing stability stats.
     ONGOING_LOG,            // Subsequent logs in a session.
   };
 
   // Creates a new metrics log of the specified type.
   // |client_id| is the identifier for this profile on this installation
   // |session_id| is an integer that's incremented on each application launch
   // |client| is used to interact with the embedder.
   // |local_state| is the PrefService that this instance should use.
   // Note: |this| instance does not take ownership of the |client|, but rather
   // stores a weak pointer to it. The caller should ensure that the |client| is
   // valid for the lifetime of this class.
   MetricsLog(const std::string& client_id,
              int session_id,
              LogType log_type,
-             metrics::MetricsServiceClient* client,
+             MetricsServiceClient* client,
              PrefService* local_state);
   virtual ~MetricsLog();
 
   // Registers local state prefs used by this class.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
   // Computes the MD5 hash of the given string, and returns the first 8 bytes of
   // the hash.
   static uint64 Hash(const std::string& value);
 
@@ skipping 16 matching lines @@
                             const base::HistogramSamples& snapshot);
 
   // Records the current operating environment, including metrics provided by
   // the specified set of |metrics_providers|.  Takes the list of installed
   // plugins, Google Update statistics, and synthetic trial IDs as parameters
   // because those can't be obtained synchronously from the UI thread.
   // A synthetic trial is one that is set up dynamically by code in Chrome. For
   // example, a pref may be mapped to a synthetic trial such that the group
   // is determined by the pref value.
   void RecordEnvironment(
-      const std::vector<metrics::MetricsProvider*>& metrics_providers,
+      const std::vector<MetricsProvider*>& metrics_providers,
       const std::vector<variations::ActiveGroupId>& synthetic_trials,
       int64 install_date);
 
   // Loads the environment proto that was saved by the last RecordEnvironment()
   // call from prefs and clears the pref value. Returns true on success or false
   // if there was no saved environment in prefs or it could not be decoded.
   bool LoadSavedEnvironmentFromPrefs();
 
   // Writes application stability metrics, including stability metrics provided
   // by the specified set of |metrics_providers|. The system profile portion of
   // the log must have already been filled in by a call to RecordEnvironment()
   // or LoadSavedEnvironmentFromPrefs().
   // NOTE: Has the side-effect of clearing the stability prefs..
   //
   // If this log is of type INITIAL_STABILITY_LOG, records additional info such
   // as number of incomplete shutdowns as well as extra breakpad and debugger
   // stats.
   void RecordStabilityMetrics(
-      const std::vector<metrics::MetricsProvider*>& metrics_providers,
+      const std::vector<MetricsProvider*>& metrics_providers,
       base::TimeDelta incremental_uptime,
       base::TimeDelta uptime);
 
   // Records general metrics based on the specified |metrics_providers|.
   void RecordGeneralMetrics(
-      const std::vector<metrics::MetricsProvider*>& metrics_providers);
+      const std::vector<MetricsProvider*>& metrics_providers);
 
   // Stop writing to this record and generate the encoded representation.
   // None of the Record* methods can be called after this is called.
   void CloseLog();
 
   // Fills |encoded_log| with the serialized protobuf representation of the
   // record.  Must only be called after CloseLog() has been called.
   void GetEncodedLog(std::string* encoded_log);
 
   const base::TimeTicks& creation_time() const {
     return creation_time_;
   }
 
   int num_events() const {
     return uma_proto_.omnibox_event_size() +
            uma_proto_.user_action_event_size();
   }
 
   LogType log_type() const { return log_type_; }
 
  protected:
   // Exposed for the sake of mocking/accessing in test code.
 
   // Fills |field_trial_ids| with the list of initialized field trials name and
   // group ids.
   virtual void GetFieldTrialIds(
       std::vector<variations::ActiveGroupId>* field_trial_ids) const;
 
-  metrics::ChromeUserMetricsExtension* uma_proto() { return &uma_proto_; }
-  const metrics::ChromeUserMetricsExtension* uma_proto() const {
+  ChromeUserMetricsExtension* uma_proto() { return &uma_proto_; }
+  const ChromeUserMetricsExtension* uma_proto() const {
     return &uma_proto_;
   }
 
  private:
   // Returns true if the environment has already been filled in by a call to
   // RecordEnvironment() or LoadSavedEnvironmentFromPrefs().
   bool HasEnvironment() const;
 
   // Returns true if the stability metrics have already been filled in by a
   // call to RecordStabilityMetrics().
@@ skipping 11 matching lines @@
                                         base::TimeDelta uptime);
 
   // closed_ is true when record has been packed up for sending, and should
   // no longer be written to.  It is only used for sanity checking.
   bool closed_;
 
   // The type of the log, i.e. initial or ongoing.
   const LogType log_type_;
 
   // Stores the protocol buffer representation for this log.
-  metrics::ChromeUserMetricsExtension uma_proto_;
+  ChromeUserMetricsExtension uma_proto_;
 
   // Used to interact with the embedder. Weak pointer; must outlive |this|
   // instance.
-  metrics::MetricsServiceClient* const client_;
+  MetricsServiceClient* const client_;
 
   // The time when the current log was created.
   const base::TimeTicks creation_time_;
 
   PrefService* local_state_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsLog);
 };
 
+}  // namespace metrics
+
 #endif  // COMPONENTS_METRICS_METRICS_LOG_H_