Move more metrics classes to metrics namespace.

components/metrics/metrics_service.cc

 // 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.
 
 //------------------------------------------------------------------------------
 // Description of the life cycle of a instance of MetricsService.
 //
 //  OVERVIEW
 //
 // A MetricsService instance is typically created at application startup.  It is
@@ skipping 173 matching lines @@
 #include "base/values.h"
 #include "components/metrics/metrics_log.h"
 #include "components/metrics/metrics_log_manager.h"
 #include "components/metrics/metrics_log_uploader.h"
 #include "components/metrics/metrics_pref_names.h"
 #include "components/metrics/metrics_reporting_scheduler.h"
 #include "components/metrics/metrics_service_client.h"
 #include "components/metrics/metrics_state_manager.h"
 #include "components/variations/entropy_provider.h"
 
-using base::Time;
-using metrics::MetricsLogManager;
+namespace metrics {
 
 namespace {
 
 // Check to see that we're being called on only one thread.
 bool IsSingleThreaded() {
   static base::PlatformThreadId thread_id = 0;
   if (!thread_id)
     thread_id = base::PlatformThread::CurrentId();
   return base::PlatformThread::CurrentId() == thread_id;
 }
@@ skipping 400 matching lines @@
   // Call GetUptimes() for the first time, thus allowing all later calls
   // to record incremental uptimes accurately.
   base::TimeDelta ignored_uptime_parameter;
   base::TimeDelta startup_uptime;
   GetUptimes(local_state_, &startup_uptime, &ignored_uptime_parameter);
   DCHECK_EQ(0, startup_uptime.InMicroseconds());
   // For backwards compatibility, leave this intact in case Omaha is checking
   // them.  metrics::prefs::kStabilityLastTimestampSec may also be useless now.
   // TODO(jar): Delete these if they have no uses.
   local_state_->SetInt64(metrics::prefs::kStabilityLaunchTimeSec,
-                         Time::Now().ToTimeT());
+                         base::Time::Now().ToTimeT());
 
   // Bookkeeping for the uninstall metrics.
   IncrementLongPrefsValue(metrics::prefs::kUninstallLaunchCount);
 
   // Kick off the process of saving the state (so the uptime numbers keep
   // getting updated) every n minutes.
   ScheduleNextStateSave();
 }
 
 void MetricsService::OnUserAction(const std::string& action) {
@@ skipping 556 matching lines @@
 }
 
 void MetricsService::RecordBooleanPrefValue(const char* path, bool value) {
   DCHECK(IsSingleThreaded());
   local_state_->SetBoolean(path, value);
   RecordCurrentState(local_state_);
 }
 
 void MetricsService::RecordCurrentState(PrefService* pref) {
   pref->SetInt64(metrics::prefs::kStabilityLastTimestampSec,
-                 Time::Now().ToTimeT());
+                 base::Time::Now().ToTimeT());
 }
+
+}  // namespace metrics