Make remaining parts of components/metrics use metrics namespace.

components/metrics/profiler/tracking_synchronizer.cc

 // 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.
 
 #include "components/metrics/profiler/tracking_synchronizer.h"
 
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/threading/thread.h"
 #include "base/tracked_objects.h"
 #include "components/metrics/profiler/tracking_synchronizer_observer.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/profiler_controller.h"
 #include "content/public/common/process_type.h"
 
 using base::TimeTicks;
 using content::BrowserThread;
 
+namespace metrics {
+
 namespace {
 
 // Negative numbers are never used as sequence numbers.  We explicitly pick a
 // negative number that is "so negative" that even when we add one (as is done
 // when we generated the next sequence number) that it will still be negative.
 // We have code that handles wrapping around on an overflow into negative
 // territory.
 const int kNeverUsableSequenceNumber = -2;
 
 // This singleton instance should be started during the single threaded
 // portion of main(). It initializes globals to provide support for all future
 // calls. This object is created on the UI thread, and it is destroyed after
 // all the other threads have gone away. As a result, it is ok to call it
 // from the UI thread, or for about:profiler.
-static metrics::TrackingSynchronizer* g_tracking_synchronizer =
-    NULL;
+static TrackingSynchronizer* g_tracking_synchronizer = NULL;
 
-}  // anonymous namespace
-
-namespace metrics {
+}  // namespace
 
 // The "RequestContext" structure describes an individual request received
 // from the UI. All methods are accessible on UI thread.
 class TrackingSynchronizer::RequestContext {
  public:
   // A map from sequence_number_ to the actual RequestContexts.
   typedef std::map<int, RequestContext*> RequestContextMap;
 
   RequestContext(
       const base::WeakPtr<TrackingSynchronizerObserver>& callback_object,
@@ skipping 239 matching lines @@
 
   ++last_used_sequence_number_;
 
   // Watch out for wrapping to a negative number.
   if (last_used_sequence_number_ < 0)
     last_used_sequence_number_ = 1;
   return last_used_sequence_number_;
 }
 
 }  // namespace metrics