Add a Rappor option in the settings page.

chrome/browser/metrics/metrics_services_manager.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_METRICS_SERVICES_MANAGER_H_
 #define CHROME_BROWSER_METRICS_METRICS_SERVICES_MANAGER_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
+#include "components/rappor/rappor_service.h"
 
 class ChromeMetricsServiceClient;
 class PrefService;
 
 namespace base {
 class FilePath;
 }
 
 namespace metrics {
 class MetricsService;
@@ skipping 30 matching lines @@
   // Should be called when a plugin loading error occurs.
   void OnPluginLoadingError(const base::FilePath& plugin_path);
 
   // Update the managed services when permissions for recording/uploading
   // metrics change.
   void UpdatePermissions(bool may_record, bool may_upload);
 
   // Returns true iff metrics reporting is enabled.
   bool IsMetricsReportingEnabled() const;
 
+  // Returns true iff Rappor reporting is enabled.
+  bool IsRapporEnabled(bool metrics_enabled) const;
+
+  // Returns the recording level for Rappor metrics.
+  rappor::RecordingLevel GetRapporRecordingLevel(bool metrics_enabled) const;
+
  private:
   // Returns the ChromeMetricsServiceClient, creating it if it hasn't been
   // created yet (and additionally creating the MetricsService in that case).
   ChromeMetricsServiceClient* GetChromeMetricsServiceClient();
 
   metrics::MetricsStateManager* GetMetricsStateManager();
 
   // Ensures that all functions are called from the same thread.
   base::ThreadChecker thread_checker_;
 
@@ skipping 10 matching lines @@
   // The RapporService, for RAPPOR metric uploads.
   scoped_ptr<rappor::RapporService> rappor_service_;
 
   // The VariationsService, for server-side experiments infrastructure.
   scoped_ptr<chrome_variations::VariationsService> variations_service_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsServicesManager);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_SERVICES_MANAGER_H_