UKM Sync Observer

components/metrics/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 COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_
 #define COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <string>
 
-#include "base/callback_forward.h"
+#include "base/callback.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "components/metrics/metrics_reporting_default_state.h"
 #include "components/metrics/proto/system_profile.pb.h"
 
 namespace base {
 class FilePath;
 }
 
 namespace ukm {
 class UkmService;
 }
 
 namespace metrics {
 
 class MetricsLogUploader;
 class MetricsService;
 
 // An abstraction of operations that depend on the embedder's (e.g. Chrome)
 // environment.
 class MetricsServiceClient {
  public:
-  virtual ~MetricsServiceClient() {}
+  MetricsServiceClient();
+  virtual ~MetricsServiceClient();
 
   // Returns the MetricsService instance that this client is associated with.
   // With the exception of testing contexts, the returned instance must be valid
   // for the lifetime of this object (typically, the embedder's client
   // implementation will own the MetricsService instance being returned).
   virtual MetricsService* GetMetricsService() = 0;
 
   // Returns the UkmService instance that this client is associated with.
   virtual ukm::UkmService* GetUkmService();
 
@@ skipping 66 matching lines @@
 
   // Returns whether metrics reporting is managed by policy.
   virtual bool IsReportingPolicyManaged();
 
   // Gets information about the default value for the metrics reporting checkbox
   // shown during first-run.
   virtual EnableMetricsDefault GetMetricsReportingDefaultState();
 
   // Returns whether cellular logic is enabled for metrics reporting.
   virtual bool IsUMACellularUploadLogicEnabled();
+
+  // Returns if history sync is enabled on all active profiles.
+  virtual bool IsHistorySyncEnabledOnAllProfiles();
+
+  // Sets the callback to run MetricsServiceManager::UpdateRunningServices.
+  void SetUpdateRunningServicesCallback(const base::Closure& callback);
+
+ protected:
+  // Notify MetricsServiceManager to UpdateRunningServices using callback.
+  void UpdateRunningServices();
+
+ private:
+  base::Closure update_running_services_;
+
+  DISALLOW_COPY_AND_ASSIGN(MetricsServiceClient);
 };
 
 }  // namespace metrics
 
 #endif  // COMPONENTS_METRICS_METRICS_SERVICE_CLIENT_H_