Support moving pending requests from one DataUseRecorder to another

components/data_use_measurement/core/data_use.cc

Index: components/data_use_measurement/core/data_use.cc
diff --git a/components/data_use_measurement/core/data_use.cc b/components/data_use_measurement/core/data_use.cc
index 9c34e8a8ce2faf750ca0624e44df7db2576a1699..e8663430df6401d9dfe00495cd4cbbc846dd082c 100644
--- a/components/data_use_measurement/core/data_use.cc
+++ b/components/data_use_measurement/core/data_use.cc
@@ -18,13 +18,4 @@ void DataUse::IncrementTotalBytes(int64_t bytes_received, int64_t bytes_sent) {
   total_bytes_sent_ += bytes_sent;

[tbansal1, 2017/06/26 21:44:28]

DCHECK_LE(0, total_bytes_received_);
DCHECK_LE(0, total_bytes_sent_);

[Raj, 2017/06/27 02:30:04]

Done

 }
 
-void DataUse::MergeFrom(const DataUse& other) {
-  // Traffic type need not be same while merging. One of the data use created
-  // when mainframe is created could have UNKNOWN traffic type, and later merged
-  // with the data use created for its mainframe request which could be
-  // USER_TRAFFIC.
-  total_bytes_sent_ += other.total_bytes_sent_;
-  total_bytes_received_ += other.total_bytes_received_;
-}
-
 }  // namespace data_use_measurement