Implement UMA log throttling for cellular connections

components/data_use_measurement/content/data_use_measurement.h

Index: components/data_use_measurement/content/data_use_measurement.h
diff --git a/components/data_use_measurement/content/data_use_measurement.h b/components/data_use_measurement/content/data_use_measurement.h
index a5b8f7136359a70c26fe085c11fb0471549bb004..94639c1f1796e037cd636bba11333df925ab6598 100644
--- a/components/data_use_measurement/content/data_use_measurement.h
+++ b/components/data_use_measurement/content/data_use_measurement.h
@@ -9,8 +9,10 @@
 
 #include <string>
 
+#include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "build/build_config.h"
 #include "components/data_use_measurement/core/data_use_user_data.h"
 
@@ -45,6 +47,11 @@ class DataUseMeasurement {
       base::android::ApplicationState application_state);
 #endif
 
+  void SetMetricsDataUseForwarder(
+      base::Callback<void(const std::string&, int)> metrics_data_use_forwarder);
+
+  base::WeakPtr<DataUseMeasurement> GetWeakPtr();
+
  private:
   // Specifies that data is received or sent, respectively.
   enum TrafficDirection { DOWNSTREAM, UPSTREAM };
@@ -81,6 +88,8 @@ class DataUseMeasurement {
       TrafficDirection dir,
       int64_t message_size) const;
 
+  base::Callback<void(const std::string&, int)> metrics_data_use_forwarder_;
+
 #if defined(OS_ANDROID)
   // Application listener store the last known state of the application in this
   // field.
@@ -91,6 +100,7 @@ class DataUseMeasurement {
   scoped_ptr<base::android::ApplicationStatusListener> app_listener_;
 #endif
 
+  base::WeakPtrFactory<DataUseMeasurement> weak_ptr_factory_;
   DISALLOW_COPY_AND_ASSIGN(DataUseMeasurement);

[Alexei Svitkine (slow), 2016/03/29 16:29:10]

Add an empty line above it.

[gayane -on leave until 09-2017, 2016/03/31 01:38:24]

Done.

 };