Batch data use objects in ExternalDataUseObserver

chrome/browser/android/data_usage/external_data_use_reporter.h

Index: chrome/browser/android/data_usage/external_data_use_reporter.h
diff --git a/chrome/browser/android/data_usage/external_data_use_reporter.h b/chrome/browser/android/data_usage/external_data_use_reporter.h
index 5999050c89dbc2dbb246fc72fa357eaecd98399c..4231224dc1812b8df847bd6782d2fb99c0c454d6 100644
--- a/chrome/browser/android/data_usage/external_data_use_reporter.h
+++ b/chrome/browser/android/data_usage/external_data_use_reporter.h
@@ -8,6 +8,7 @@
 #include <stddef.h>
 #include <stdint.h>
 
+#include <deque>
 #include <memory>
 #include <string>
 
@@ -70,7 +71,8 @@ class ExternalDataUseReporter {
   // Notifies the ExternalDataUseReporter of data usage. The data use is
   // labeled using |data_use_tab_model_|, buffered and then reported to
   // |external_data_use_observer_bridge_| later.
-  void OnDataUse(const data_usage::DataUse& data_use);
+  void OnDataUse(
+      std::unique_ptr<std::deque<const data_usage::DataUse>> data_use_list);

[tbansal1, 2016/07/21 04:40:30]

you can also mark the deque as const which will prevent addition of new objects
to it.
const std::deque

[Raj, 2016/07/21 05:58:22]

Done.

 
   void OnReportDataUseDone(bool success);