Move more metrics classes to metrics namespace.

components/metrics/metrics_reporting_scheduler.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.
 
 #ifndef COMPONENTS_METRICS_METRICS_REPORTING_SCHEDULER_H_
 #define COMPONENTS_METRICS_METRICS_REPORTING_SCHEDULER_H_
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 
+namespace metrics {
+
 // Scheduler task to drive a MetricsService object's uploading.
 class MetricsReportingScheduler {
  public:
   explicit MetricsReportingScheduler(const base::Closure& upload_callback);
   ~MetricsReportingScheduler();
 
   // Starts scheduling uploads. This in a no-op if the scheduler is already
   // running, so it is safe to call more than once.
   void Start();
 
@@ skipping 44 matching lines @@
   // Whether the InitTaskComplete() callback has been called.
   bool init_task_complete_;
 
   // Whether the initial scheduled upload timer has fired before the init task
   // has been completed.
   bool waiting_for_init_task_complete_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsReportingScheduler);
 };
 
+}  // namespace metrics
+
 #endif  // COMPONENTS_METRICS_METRICS_REPORTING_SCHEDULER_H_