Move more metrics classes to metrics namespace.

chrome/browser/metrics/extensions_metrics_provider.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.
 
 #include "chrome/browser/metrics/extensions_metrics_provider.h"
 
+#include <algorithm>
 #include <set>
+#include <vector>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/extensions/install_verifier.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "components/metrics/metrics_log.h"
 #include "components/metrics/metrics_state_manager.h"
 #include "components/metrics/proto/system_profile.pb.h"
@@ skipping 142 matching lines @@
     return extensions::ExtensionRegistry::Get(profile)
         ->GenerateInstalledExtensionsSet();
   }
   return scoped_ptr<extensions::ExtensionSet>();
 }
 
 uint64 ExtensionsMetricsProvider::GetClientID() {
   // TODO(blundell): Create a MetricsLog::ClientIDAsInt() API and call it
   // here as well as in MetricsLog's population of the client_id field of
   // the uma_proto.
-  return MetricsLog::Hash(metrics_state_manager_->client_id());
+  return metrics::MetricsLog::Hash(metrics_state_manager_->client_id());
 }
 
 void ExtensionsMetricsProvider::ProvideSystemProfileMetrics(
     metrics::SystemProfileProto* system_profile) {
   ProvideOffStoreMetric(system_profile);
   ProvideOccupiedBucketMetric(system_profile);
 }
 
 void ExtensionsMetricsProvider::ProvideOffStoreMetric(
     metrics::SystemProfileProto* system_profile) {
@@ skipping 43 matching lines @@
        it != extensions->end();
        ++it) {
     buckets.insert(HashExtension((*it)->id(), client_key));
   }
 
   for (std::set<int>::const_iterator it = buckets.begin(); it != buckets.end();
        ++it) {
     system_profile->add_occupied_extension_bucket(*it);
   }
 }