Moves ProfilerMetricsProvider to //components/metrics.

components/metrics/profiler/tracking_synchronizer.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.
 
-#ifndef CHROME_BROWSER_METRICS_TRACKING_SYNCHRONIZER_H_
-#define CHROME_BROWSER_METRICS_TRACKING_SYNCHRONIZER_H_
+#ifndef COMPONENTS_METRICS_PROFILER_TRACKING_SYNCHRONIZER_H_
+#define COMPONENTS_METRICS_PROFILER_TRACKING_SYNCHRONIZER_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/lazy_instance.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/profiler_subscriber.h"
 
 // This class maintains state that is used to upload profiler data from the
 // various processes, into the browser process. Such transactions are usually
 // instigated by the browser. In general, a process will respond by gathering
 // profiler data, and transmitting the pickled profiler data. We collect the
 // data in asynchronous mode that doesn't block the UI thread.
 //
 // To assure that all the processes have responded, a counter is maintained
 // to indicate the number of pending (not yet responsive) processes. We tag
 // each group of requests with a sequence number. For each group of requests, we
 // create RequestContext object which stores the sequence number, pending
 // processes and the callback_object that needs to be notified when we receive
 // an update from processes. When an update arrives we find the RequestContext
 // associated with sequence number and send the unpickled profiler data to the
 // |callback_object_|.
 
-namespace chrome_browser_metrics {
+namespace metrics {
 
 class TrackingSynchronizerObserver;
 
 class TrackingSynchronizer
     : public content::ProfilerSubscriber,
       public base::RefCountedThreadSafe<TrackingSynchronizer> {
  public:
   // Construction also sets up the global singleton instance. This instance is
   // used to communicate between the IO and UI thread, and is destroyed only as
   // the main thread (browser_main) terminates, which means the IO thread has
@@ skipping 61 matching lines @@
   // give up on a "slow to respond" process.  We use a sequence_number to be
   // sure a response from a process is associated with the current round of
   // requests. All sequence numbers used are non-negative.
   // last_used_sequence_number_ is the most recently used number (used to avoid
   // reuse for a long time).
   int last_used_sequence_number_;
 
   DISALLOW_COPY_AND_ASSIGN(TrackingSynchronizer);
 };
 
-}  // namespace chrome_browser_metrics
+}  // namespace metrics
 
-#endif  // CHROME_BROWSER_METRICS_TRACKING_SYNCHRONIZER_H_
+#endif  // COMPONENTS_METRICS_PROFILER_TRACKING_SYNCHRONIZER_H_