Revert of List message decryption failures on chrome://gcm-internals

components/gcm_driver/gcm_stats_recorder_impl.cc

Index: components/gcm_driver/gcm_stats_recorder_impl.cc
diff --git a/components/gcm_driver/gcm_stats_recorder_impl.cc b/components/gcm_driver/gcm_stats_recorder_impl.cc
index 803e6baff0c2adbac480c48957c234375f58f408..de3035459fe791c89c695edaca83207f2465aa55 100644
--- a/components/gcm_driver/gcm_stats_recorder_impl.cc
+++ b/components/gcm_driver/gcm_stats_recorder_impl.cc
@@ -163,28 +163,11 @@
   registration_activities_.clear();
   receiving_activities_.clear();
   sending_activities_.clear();
-  decryption_failure_activities_.clear();
 }
 
 void GCMStatsRecorderImpl::NotifyActivityRecorded() {
   if (delegate_)
     delegate_->OnActivityRecorded();
-}
-
-void GCMStatsRecorderImpl::RecordDecryptionFailure(
-    const std::string& app_id,
-    GCMEncryptionProvider::DecryptionFailure reason) {
-  if (!is_recording_)
-    return;
-
-  DecryptionFailureActivity data;
-  DecryptionFailureActivity* inserted_data = InsertCircularBuffer(
-      &decryption_failure_activities_, data);
-  inserted_data->app_id = app_id;
-  inserted_data->details =
-      GCMEncryptionProvider::ToDecryptionFailureDetailsString(reason);
-
-  NotifyActivityRecorded();
 }
 
 void GCMStatsRecorderImpl::RecordCheckin(
@@ -477,10 +460,6 @@
       recorded_activities->sending_activities.begin(),
       sending_activities_.begin(),
       sending_activities_.end());
-  recorded_activities->decryption_failure_activities.insert(
-      recorded_activities->decryption_failure_activities.begin(),
-      decryption_failure_activities_.begin(),
-      decryption_failure_activities_.end());
 }
 
 void GCMStatsRecorderImpl::RecordSending(const std::string& app_id,