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

components/gcm_driver/gcm_stats_recorder_android_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/gcm_driver/gcm_stats_recorder_android.h"
 
 #include <stddef.h>
 
+#include "components/gcm_driver/crypto/gcm_encryption_provider.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace gcm {
 
 namespace {
 
 const char kTestAppId[] = "test_app_id";
 
 class GCMStatsRecorderAndroidTest : public ::testing::Test,
                                     public GCMStatsRecorderAndroid::Delegate {
@@ skipping 29 matching lines @@
 
   recorder.RecordUnregistrationSent(kTestAppId);
   EXPECT_EQ(3u, activity_recorded_calls());
 
   recorder.RecordUnregistrationResponse(kTestAppId, true /* success */);
   EXPECT_EQ(4u, activity_recorded_calls());
 
   recorder.RecordDataMessageReceived(kTestAppId, 42 /* message_byte_size */);
   EXPECT_EQ(5u, activity_recorded_calls());
 
+  recorder.RecordDecryptionFailure(
+      kTestAppId, GCMEncryptionProvider::DECRYPTION_FAILURE_INVALID_PAYLOAD);
+  EXPECT_EQ(6u, activity_recorded_calls());
+
   RecordedActivities activities;
   recorder.CollectActivities(&activities);
 
   EXPECT_EQ(4u, activities.registration_activities.size());
   EXPECT_EQ(1u, activities.receiving_activities.size());
+  EXPECT_EQ(1u, activities.decryption_failure_activities.size());
 
   recorder.CollectActivities(&activities);
 
   EXPECT_EQ(8u, activities.registration_activities.size());
   EXPECT_EQ(2u, activities.receiving_activities.size());
+  EXPECT_EQ(2u, activities.decryption_failure_activities.size());
 
   recorder.Clear();
 
   RecordedActivities empty_activities;
   recorder.CollectActivities(&empty_activities);
 
   EXPECT_EQ(0u, empty_activities.registration_activities.size());
   EXPECT_EQ(0u, empty_activities.receiving_activities.size());
+  EXPECT_EQ(0u, empty_activities.decryption_failure_activities.size());
 }
 
 TEST_F(GCMStatsRecorderAndroidTest, NullDelegate) {
   GCMStatsRecorderAndroid recorder(nullptr /* delegate */);
   recorder.set_is_recording(true);
 
   ASSERT_TRUE(recorder.is_recording());
 
   recorder.RecordRegistrationSent(kTestAppId);
 
@@ skipping 11 matching lines @@
 
   RecordedActivities activities;
   recorder.CollectActivities(&activities);
 
   EXPECT_EQ(0u, activities.registration_activities.size());
 }
 
 }  // namespace
 
 }  // namespace gcm