Split a MetricsLogStore object out of MetricsLogManager.

components/metrics/metrics_service.h

Index: components/metrics/metrics_service.h
diff --git a/components/metrics/metrics_service.h b/components/metrics/metrics_service.h
index 42f311fc7070d1262dfdb246c76022bc02ae4b51..fc23bdcfe0ae606deb5aee46e8fcb7b3aed5f29a 100644
--- a/components/metrics/metrics_service.h
+++ b/components/metrics/metrics_service.h
@@ -31,6 +31,7 @@
 #include "components/metrics/execution_phase.h"
 #include "components/metrics/metrics_log.h"
 #include "components/metrics/metrics_log_manager.h"
+#include "components/metrics/metrics_log_store.h"
 #include "components/metrics/metrics_provider.h"
 #include "components/metrics/net/network_metrics_provider.h"
 #include "components/variations/synthetic_trials.h"
@@ -200,6 +201,7 @@ class MetricsService : public base::HistogramFlattener {
  protected:
   // Exposed for testing.
   MetricsLogManager* log_manager() { return &log_manager_; }
+  MetricsLogStore* log_store() { return &log_store_; }
 
  private:
   friend class MetricsServiceAccessor;
@@ -364,6 +366,9 @@ class MetricsService : public base::HistogramFlattener {
   // Manager for the various in-flight logs.
   MetricsLogManager log_manager_;
 
+  // Store of logs ready to be uploaded.
+  MetricsLogStore log_store_;
+
   // |histogram_snapshot_manager_| prepares histogram deltas for transmission.
   base::HistogramSnapshotManager histogram_snapshot_manager_;