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

components/gcm_driver/gcm_stats_recorder_android.cc

Index: components/gcm_driver/gcm_stats_recorder_android.cc
diff --git a/components/gcm_driver/gcm_stats_recorder_android.cc b/components/gcm_driver/gcm_stats_recorder_android.cc
index 3e2d1ca1bda0fadfb533e4377705b7cac8fe13ad..918638b5c1fe704300dba5a43d6a2d1625628ce6 100644
--- a/components/gcm_driver/gcm_stats_recorder_android.cc
+++ b/components/gcm_driver/gcm_stats_recorder_android.cc
@@ -25,6 +25,7 @@ GCMStatsRecorderAndroid::~GCMStatsRecorderAndroid() {}
 void GCMStatsRecorderAndroid::Clear() {
   registration_activities_.clear();
   receiving_activities_.clear();
+  decryption_failure_activities_.clear();
 }
 
 void GCMStatsRecorderAndroid::CollectActivities(
@@ -39,6 +40,10 @@ void GCMStatsRecorderAndroid::CollectActivities(
       recorded_activities->receiving_activities.begin(),
       receiving_activities_.begin(),
       receiving_activities_.end());
+  recorded_activities->decryption_failure_activities.insert(
+      recorded_activities->decryption_failure_activities.begin(),
+      decryption_failure_activities_.begin(),
+      decryption_failure_activities_.end());
 }
 
 void GCMStatsRecorderAndroid::RecordRegistrationSent(
@@ -116,4 +121,23 @@ void GCMStatsRecorderAndroid::RecordDataMessageReceived(
     delegate_->OnActivityRecorded();
 }
 
+void GCMStatsRecorderAndroid::RecordDecryptionFailure(
+    const std::string& app_id,
+    GCMEncryptionProvider::DecryptionFailure reason) {
+  if (!is_recording_)
+    return;
+
+  DecryptionFailureActivity activity;
+  activity.app_id = app_id;
+  activity.details =
+      GCMEncryptionProvider::ToDecryptionFailureDetailsString(reason);
+
+  decryption_failure_activities_.push_front(activity);
+  if (decryption_failure_activities_.size() > MAX_LOGGED_ACTIVITY_COUNT)
+    decryption_failure_activities_.pop_back();
+
+  if (delegate_)
+    delegate_->OnActivityRecorded();
+}
+
 }  // namespace gcm