Metrics provider for statistical stack profiler

chrome/browser/metrics/chrome_metrics_service_client.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 CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_
 #define CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/threading/thread_checker.h"
 #include "chrome/browser/metrics/metrics_memory_details.h"
 #include "chrome/browser/metrics/network_stats_uploader.h"
 #include "components/metrics/metrics_service_client.h"
 #include "components/metrics/profiler/tracking_synchronizer_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
+class CallStackProfileMetricsProvider;
 class ChromeOSMetricsProvider;
 class GoogleUpdateMetricsProviderWin;
 class PluginMetricsProvider;
 class PrefRegistrySimple;
 
 #if !defined(OS_CHROMEOS) && !defined(OS_IOS)
 class SigninStatusMetricsProvider;
 #endif
 
 namespace base {
@@ skipping 125 matching lines @@
   // MetricsService. Has the same lifetime as |metrics_service_|.
   PluginMetricsProvider* plugin_metrics_provider_;
 #endif
 
 #if defined(OS_WIN)
   // The GoogleUpdateMetricsProviderWin instance that was registered with
   // MetricsService. Has the same lifetime as |metrics_service_|.
   GoogleUpdateMetricsProviderWin* google_update_metrics_provider_;
 #endif
 
+  // The CallStackProfileMetricsProvider instance that was registered with
+  // MetricsService. Has the same lifetime as |metrics_service_|. This is
+  // Windows x64-only until implemented for other platforms.
+  CallStackProfileMetricsProvider* call_stack_profile_metrics_provider_;
+
   // Callback that is called when initial metrics gathering is complete.
   base::Closure finished_gathering_initial_metrics_callback_;
 
   // The MemoryGrowthTracker instance that tracks memory usage growth in
   // MemoryDetails.
   MemoryGrowthTracker memory_growth_tracker_;
 
   base::WeakPtrFactory<ChromeMetricsServiceClient> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeMetricsServiceClient);
 };
 
 #endif  // CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_CLIENT_H_