Instant Tethering: Add more host connection failure metrics.

Breaks up the UNKNOWN_ERROR enum into 3 enums:
1) UNKNOWN_ERROR, which precisely captures when the host returns an
   UNKNOWN_ERROR response code.
2) NO_RESPONSE, which captures when the client never received a response at
   all. This likely indicates a Bluetooth error.
3) INVALID_HOTSPOT_CREDENTIALS, which captures when the host returns a SUCCESS
   response, but with invalid SSID or password info.

Bug: 785514
Change-Id: I0d40283d8b458dd45a1d490fb53eb075e2eb05e4
Reviewed-on: https://chromium-review.googlesource.com/1011595
Commit-Queue: Ryan Hansberry <hansberry@chromium.org>
Reviewed-by: Steven Holte <holte@chromium.org>
Reviewed-by: Jeremy Klein <jlklein@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550719}

chromeos/components/tether/connect_tethering_operation.cc

@@ -78,9 +78,7 @@ ConnectTetheringOperation::ConnectTetheringOperation(
       tether_host_response_recorder_(tether_host_response_recorder),
       clock_(base::DefaultClock::GetInstance()),
       setup_required_(setup_required),
-      error_code_to_return_(
-          ConnectTetheringResponse_ResponseCode::
-              ConnectTetheringResponse_ResponseCode_UNKNOWN_ERROR) {}
+      error_code_to_return_(HostResponseErrorCode::NO_RESPONSE) {}
 
 ConnectTetheringOperation::~ConnectTetheringOperation() = default;
 
@@ -140,12 +138,15 @@ void ConnectTetheringOperation::OnMessageReceived(
                     << remote_device.GetTruncatedDeviceIdForLogs() << " and "
                     << "response_code == SUCCESS, but the response did not "
                     << "contain a Wi-Fi SSID and/or password.";
+      error_code_to_return_ =
+          HostResponseErrorCode::INVALID_HOTSPOT_CREDENTIALS;
     }
   } else {
     PA_LOG(INFO) << "Received ConnectTetheringResponse from device with ID "
                  << remote_device.GetTruncatedDeviceIdForLogs() << " and "
                  << "response_code == " << response->response_code() << ".";
-    error_code_to_return_ = response->response_code();
+    error_code_to_return_ = ConnectTetheringResponseCodeToHostResponseErrorCode(
+        response->response_code());
   }
 
   // UMA_HISTOGRAM_MEDIUM_TIMES is used because UMA_HISTOGRAM_TIMES has a max
@@ -198,7 +199,7 @@ void ConnectTetheringOperation::NotifyObserversOfSuccessfulResponse(
 }
 
 void ConnectTetheringOperation::NotifyObserversOfConnectionFailure(
-    ConnectTetheringResponse_ResponseCode error_code) {
+    HostResponseErrorCode error_code) {
   for (auto& observer : observer_list_)
     observer.OnConnectTetheringFailure(remote_device_, error_code);
 }
@@ -210,6 +211,38 @@ uint32_t ConnectTetheringOperation::GetTimeoutSeconds() {
                    kSetupNotRequiredResponseTimeoutSeconds;
 }
 
+ConnectTetheringOperation::HostResponseErrorCode
+ConnectTetheringOperation::ConnectTetheringResponseCodeToHostResponseErrorCode(
+    ConnectTetheringResponse_ResponseCode error_code) {
+  switch (error_code) {
+    case ConnectTetheringResponse_ResponseCode::
+        ConnectTetheringResponse_ResponseCode_PROVISIONING_FAILED:
+      return HostResponseErrorCode::PROVISIONING_FAILED;
+    case ConnectTetheringResponse_ResponseCode::
+        ConnectTetheringResponse_ResponseCode_TETHERING_TIMEOUT:
+      return HostResponseErrorCode::TETHERING_TIMEOUT;
+    case ConnectTetheringResponse_ResponseCode::
+        ConnectTetheringResponse_ResponseCode_TETHERING_UNSUPPORTED:
+      return HostResponseErrorCode::TETHERING_UNSUPPORTED;
+    case ConnectTetheringResponse_ResponseCode::
+        ConnectTetheringResponse_ResponseCode_NO_CELL_DATA:
+      return HostResponseErrorCode::NO_CELL_DATA;
+    case ConnectTetheringResponse_ResponseCode::
+        ConnectTetheringResponse_ResponseCode_ENABLING_HOTSPOT_FAILED:
+      return HostResponseErrorCode::ENABLING_HOTSPOT_FAILED;
+    case ConnectTetheringResponse_ResponseCode::
+        ConnectTetheringResponse_ResponseCode_ENABLING_HOTSPOT_TIMEOUT:
+      return HostResponseErrorCode::ENABLING_HOTSPOT_TIMEOUT;
+    case ConnectTetheringResponse_ResponseCode::
+        ConnectTetheringResponse_ResponseCode_UNKNOWN_ERROR:
+      return HostResponseErrorCode::UNKNOWN_ERROR;
+    default:
+      break;
+  }
+
+  return HostResponseErrorCode::NO_RESPONSE;
+}
+
 void ConnectTetheringOperation::SetClockForTest(base::Clock* clock_for_test) {
   clock_ = clock_for_test;
 }

chromeos/components/tether/connect_tethering_operation.h

@@ -28,6 +28,20 @@ class TetherHostResponseRecorder;
 // notifies observers when the RemoteDevice sends a response.
 class ConnectTetheringOperation : public MessageTransferOperation {
  public:
+  // Includes all error codes of ConnectTetheringResponse_ResponseCode, but
+  // includes extra values, |NO_RESPONSE| and |INVALID_HOTSPOT_CREDENTIALS|.
+  enum HostResponseErrorCode {
+    PROVISIONING_FAILED = 0,
+    TETHERING_TIMEOUT = 1,
+    TETHERING_UNSUPPORTED = 2,
+    NO_CELL_DATA = 3,
+    ENABLING_HOTSPOT_FAILED = 4,
+    ENABLING_HOTSPOT_TIMEOUT = 5,
+    UNKNOWN_ERROR = 6,
+    NO_RESPONSE = 7,
+    INVALID_HOTSPOT_CREDENTIALS = 8
+  };
+
   class Factory {
    public:
     static std::unique_ptr<ConnectTetheringOperation> NewInstance(
@@ -59,7 +73,7 @@ class ConnectTetheringOperation : public MessageTransferOperation {
         const std::string& password) = 0;
     virtual void OnConnectTetheringFailure(
         const cryptauth::RemoteDevice& remote_device,
-        ConnectTetheringResponse_ResponseCode error_code) = 0;
+        HostResponseErrorCode error_code) = 0;
   };
 
   ~ConnectTetheringOperation() override;
@@ -87,14 +101,16 @@ class ConnectTetheringOperation : public MessageTransferOperation {
   void NotifyConnectTetheringRequestSent();
   void NotifyObserversOfSuccessfulResponse(const std::string& ssid,
                                            const std::string& password);
-  void NotifyObserversOfConnectionFailure(
-      ConnectTetheringResponse_ResponseCode error_code);
+  void NotifyObserversOfConnectionFailure(HostResponseErrorCode error_code);
 
  private:
   friend class ConnectTetheringOperationTest;
   FRIEND_TEST_ALL_PREFIXES(ConnectTetheringOperationTest,
                            TestOperation_SetupRequired);
 
+  HostResponseErrorCode ConnectTetheringResponseCodeToHostResponseErrorCode(
+      ConnectTetheringResponse_ResponseCode error_code);
+
   void SetClockForTest(base::Clock* clock_for_test);
 
   // The amount of time this operation will wait for a response. The timeout
@@ -112,7 +128,7 @@ class ConnectTetheringOperation : public MessageTransferOperation {
   // OnOperationFinished().
   std::string ssid_to_return_;
   std::string password_to_return_;
-  ConnectTetheringResponse_ResponseCode error_code_to_return_;
+  HostResponseErrorCode error_code_to_return_;
   base::Time connect_tethering_request_start_time_;
 
   base::ObserverList<Observer> observer_list_;

chromeos/components/tether/connect_tethering_operation_unittest.cc

@@ -46,7 +46,9 @@ class TestObserver final : public ConnectTetheringOperation::Observer {
   const std::string& password() { return password_; }
   bool has_received_failure() { return has_received_failure_; }
   bool has_sent_request() { return has_sent_request_; }
-  ConnectTetheringResponse_ResponseCode error_code() { return error_code_; }
+  ConnectTetheringOperation::HostResponseErrorCode error_code() {
+    return error_code_;
+  }
 
   // ConnectTetheringOperation::Observer:
   void OnConnectTetheringRequestSent(
@@ -65,7 +67,7 @@ class TestObserver final : public ConnectTetheringOperation::Observer {
 
   void OnConnectTetheringFailure(
       const cryptauth::RemoteDevice& remote_device,
-      ConnectTetheringResponse_ResponseCode error_code) override {
+      ConnectTetheringOperation::HostResponseErrorCode error_code) override {
     has_received_failure_ = true;
     remote_device_ = remote_device;
     error_code_ = error_code;
@@ -77,7 +79,7 @@ class TestObserver final : public ConnectTetheringOperation::Observer {
   std::string password_;
   bool has_received_failure_ = false;
   bool has_sent_request_ = false;
-  ConnectTetheringResponse_ResponseCode error_code_;
+  ConnectTetheringOperation::HostResponseErrorCode error_code_;
 };
 
 std::string CreateConnectTetheringRequestString() {
@@ -154,6 +156,7 @@ class ConnectTetheringOperationTest : public testing::Test {
 
   void SimulateResponseReceivedAndVerifyObserverCallbackInvoked(
       ConnectTetheringResponse_ResponseCode response_code,
+      ConnectTetheringOperation::HostResponseErrorCode expected_error_code,
       bool use_proto_without_ssid_and_password) {
     test_clock_.Advance(kConnectTetheringResponseTime);
 
@@ -184,7 +187,7 @@ class ConnectTetheringOperationTest : public testing::Test {
       EXPECT_EQ(std::string(kTestPassword), test_observer_->password());
     } else {
       EXPECT_TRUE(test_observer_->has_received_failure());
-      EXPECT_EQ(expected_response_code, test_observer_->error_code());
+      EXPECT_EQ(expected_error_code, test_observer_->error_code());
     }
 
     histogram_tester_.ExpectTimeBucketCount(
@@ -228,6 +231,8 @@ TEST_F(ConnectTetheringOperationTest, TestOperation_SuccessButInvalidResponse) {
   SimulateResponseReceivedAndVerifyObserverCallbackInvoked(
       ConnectTetheringResponse_ResponseCode::
           ConnectTetheringResponse_ResponseCode_SUCCESS,
+      ConnectTetheringOperation::HostResponseErrorCode::
+          INVALID_HOTSPOT_CREDENTIALS,
       true /* use_proto_without_ssid_and_password */);
 }
 
@@ -239,6 +244,7 @@ TEST_F(ConnectTetheringOperationTest, TestOperation_SuccessWithValidResponse) {
   SimulateResponseReceivedAndVerifyObserverCallbackInvoked(
       ConnectTetheringResponse_ResponseCode::
           ConnectTetheringResponse_ResponseCode_SUCCESS,
+      ConnectTetheringOperation::HostResponseErrorCode::UNKNOWN_ERROR,
       false /* use_proto_without_ssid_and_password */);
 }
 
@@ -251,6 +257,7 @@ TEST_F(ConnectTetheringOperationTest, TestOperation_UnknownError) {
   SimulateResponseReceivedAndVerifyObserverCallbackInvoked(
       ConnectTetheringResponse_ResponseCode::
           ConnectTetheringResponse_ResponseCode_UNKNOWN_ERROR,
+      ConnectTetheringOperation::HostResponseErrorCode::UNKNOWN_ERROR,
       false /* use_proto_without_ssid_and_password */);
 }
 
@@ -263,6 +270,7 @@ TEST_F(ConnectTetheringOperationTest, TestOperation_ProvisioningFailed) {
   SimulateResponseReceivedAndVerifyObserverCallbackInvoked(
       ConnectTetheringResponse_ResponseCode::
           ConnectTetheringResponse_ResponseCode_PROVISIONING_FAILED,
+      ConnectTetheringOperation::HostResponseErrorCode::PROVISIONING_FAILED,
       false /* use_proto_without_ssid_and_password */);
 }
 
@@ -278,8 +286,7 @@ TEST_F(ConnectTetheringOperationTest, TestCannotConnect) {
 
   // The maximum number of connection failures has occurred.
   EXPECT_TRUE(test_observer_->has_received_failure());
-  EXPECT_EQ(ConnectTetheringResponse_ResponseCode::
-                ConnectTetheringResponse_ResponseCode_UNKNOWN_ERROR,
+  EXPECT_EQ(ConnectTetheringOperation::HostResponseErrorCode::NO_RESPONSE,
             test_observer_->error_code());
 
   histogram_tester_.ExpectTotalCount(

chromeos/components/tether/host_connection_metrics_logger.cc

@@ -95,6 +95,15 @@ void HostConnectionMetricsLogger::RecordConnectionToHostResult(
       RecordConnectionResultFailure(
           ConnectionToHostResult_FailureEventType::ENABLING_HOTSPOT_TIMEOUT);
       break;
+    case ConnectionToHostResult::CONNECTION_RESULT_FAILURE_NO_RESPONSE:
+      RecordConnectionResultFailure(
+          ConnectionToHostResult_FailureEventType::NO_RESPONSE);
+      break;
+    case ConnectionToHostResult::
+        CONNECTION_RESULT_FAILURE_INVALID_HOTSPOT_CREDENTIALS:
+      RecordConnectionResultFailure(
+          ConnectionToHostResult_FailureEventType::INVALID_HOTSPOT_CREDENTIALS);
+      break;
     default:
       NOTREACHED();
   };

chromeos/components/tether/host_connection_metrics_logger.h

@@ -40,7 +40,9 @@ class HostConnectionMetricsLogger
     CONNECTION_RESULT_FAILURE_TETHERING_UNSUPPORTED,
     CONNECTION_RESULT_FAILURE_NO_CELL_DATA,
     CONNECTION_RESULT_FAILURE_ENABLING_HOTSPOT_FAILED,
-    CONNECTION_RESULT_FAILURE_ENABLING_HOTSPOT_TIMEOUT
+    CONNECTION_RESULT_FAILURE_ENABLING_HOTSPOT_TIMEOUT,
+    CONNECTION_RESULT_FAILURE_NO_RESPONSE,
+    CONNECTION_RESULT_FAILURE_INVALID_HOTSPOT_CREDENTIALS
   };
 
   // Record the result of an attempted host connection.
@@ -105,6 +107,11 @@ class HostConnectionMetricsLogger
                            RecordConnectToHostDuration);
   FRIEND_TEST_ALL_PREFIXES(HostConnectionMetricsLoggerTest,
                            RecordConnectToHostDuration_Background);
+  FRIEND_TEST_ALL_PREFIXES(HostConnectionMetricsLoggerTest,
+                           RecordConnectionResultFailureNoResponse);
+  FRIEND_TEST_ALL_PREFIXES(
+      HostConnectionMetricsLoggerTest,
+      RecordConnectionResultFailureInvalidHotspotCredentials);
 
   // An Instant Tethering connection can fail for several different reasons.
   // Though traditionally success and each failure case would be logged to a
@@ -140,6 +147,8 @@ class HostConnectionMetricsLogger
     NO_CELL_DATA = 4,
     ENABLING_HOTSPOT_FAILED = 5,
     ENABLING_HOTSPOT_TIMEOUT = 6,
+    NO_RESPONSE = 7,
+    INVALID_HOTSPOT_CREDENTIALS = 8,
     FAILURE_MAX
   };
 

chromeos/components/tether/host_connection_metrics_logger_unittest.cc

@@ -464,6 +464,41 @@ TEST_F(HostConnectionMetricsLoggerTest,
   VerifyConnectToHostDuration(true /* is_background_advertisement */);
 }
 
+TEST_F(HostConnectionMetricsLoggerTest,
+       RecordConnectionResultFailureNoResponse) {
+  SetActiveHostToConnectingAndReceiveAdvertisement(
+      test_devices_[0].GetDeviceId(), false /* is_background_advertisement */);
+
+  metrics_logger_->RecordConnectionToHostResult(
+      HostConnectionMetricsLogger::ConnectionToHostResult::
+          CONNECTION_RESULT_FAILURE_NO_RESPONSE,
+      test_devices_[0].GetDeviceId());
+
+  VerifyFailure(HostConnectionMetricsLogger::
+                    ConnectionToHostResult_FailureEventType::NO_RESPONSE);
+  VerifySuccess(HostConnectionMetricsLogger::
+                    ConnectionToHostResult_SuccessEventType::FAILURE,
+                false /* is_background_advertisement */);
+}
+
+TEST_F(HostConnectionMetricsLoggerTest,
+       RecordConnectionResultFailureInvalidHotspotCredentials) {
+  SetActiveHostToConnectingAndReceiveAdvertisement(
+      test_devices_[0].GetDeviceId(), false /* is_background_advertisement */);
+
+  metrics_logger_->RecordConnectionToHostResult(
+      HostConnectionMetricsLogger::ConnectionToHostResult::
+          CONNECTION_RESULT_FAILURE_INVALID_HOTSPOT_CREDENTIALS,
+      test_devices_[0].GetDeviceId());
+
+  VerifyFailure(
+      HostConnectionMetricsLogger::ConnectionToHostResult_FailureEventType::
+          INVALID_HOTSPOT_CREDENTIALS);
+  VerifySuccess(HostConnectionMetricsLogger::
+                    ConnectionToHostResult_SuccessEventType::FAILURE,
+                false /* is_background_advertisement */);
+}
+
 }  // namespace tether
 
 }  // namespace chromeos

chromeos/components/tether/tether_connector_impl.cc

@@ -202,7 +202,7 @@ void TetherConnectorImpl::OnSuccessfulConnectTetheringResponse(
 
 void TetherConnectorImpl::OnConnectTetheringFailure(
     const cryptauth::RemoteDevice& remote_device,
-    ConnectTetheringResponse_ResponseCode error_code) {
+    ConnectTetheringOperation::HostResponseErrorCode error_code) {
   std::string device_id_copy = remote_device.GetDeviceId();
   if (device_id_pending_connection_ != device_id_copy) {
     // If the failure was part of a previous attempt for a different device,
@@ -366,17 +366,15 @@ void TetherConnectorImpl::OnWifiConnection(
 HostConnectionMetricsLogger::ConnectionToHostResult
 TetherConnectorImpl::GetConnectionToHostResultFromErrorCode(
     const std::string& device_id,
-    ConnectTetheringResponse_ResponseCode error_code) {
+    ConnectTetheringOperation::HostResponseErrorCode error_code) {
   if (error_code ==
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_PROVISIONING_FAILED) {
+      ConnectTetheringOperation::HostResponseErrorCode::PROVISIONING_FAILED) {
     return HostConnectionMetricsLogger::ConnectionToHostResult::
         CONNECTION_RESULT_PROVISIONING_FAILED;
   }
 
   if (error_code ==
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_TETHERING_TIMEOUT) {
+      ConnectTetheringOperation::HostResponseErrorCode::TETHERING_TIMEOUT) {
     const std::string tether_network_guid =
         device_id_tether_network_guid_map_->GetTetherNetworkGuidForDeviceId(
             device_id);
@@ -390,34 +388,43 @@ TetherConnectorImpl::GetConnectionToHostResultFromErrorCode(
   }
 
   if (error_code ==
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_TETHERING_UNSUPPORTED) {
+      ConnectTetheringOperation::HostResponseErrorCode::TETHERING_UNSUPPORTED) {
     return HostConnectionMetricsLogger::ConnectionToHostResult::
         CONNECTION_RESULT_FAILURE_TETHERING_UNSUPPORTED;
   }
 
-  if (error_code == ConnectTetheringResponse_ResponseCode::
-                        ConnectTetheringResponse_ResponseCode_NO_CELL_DATA) {
+  if (error_code ==
+      ConnectTetheringOperation::HostResponseErrorCode::NO_CELL_DATA) {
     return HostConnectionMetricsLogger::ConnectionToHostResult::
         CONNECTION_RESULT_FAILURE_NO_CELL_DATA;
   }
 
-  if (error_code ==
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_ENABLING_HOTSPOT_FAILED) {
+  if (error_code == ConnectTetheringOperation::HostResponseErrorCode::
+                        ENABLING_HOTSPOT_FAILED) {
     return HostConnectionMetricsLogger::ConnectionToHostResult::
         CONNECTION_RESULT_FAILURE_ENABLING_HOTSPOT_FAILED;
   }
 
-  if (error_code ==
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_ENABLING_HOTSPOT_TIMEOUT) {
+  if (error_code == ConnectTetheringOperation::HostResponseErrorCode::
+                        ENABLING_HOTSPOT_TIMEOUT) {
     return HostConnectionMetricsLogger::ConnectionToHostResult::
         CONNECTION_RESULT_FAILURE_ENABLING_HOTSPOT_TIMEOUT;
   }
 
+  if (error_code ==
+      ConnectTetheringOperation::HostResponseErrorCode::UNKNOWN_ERROR) {
+    return HostConnectionMetricsLogger::ConnectionToHostResult::
+        CONNECTION_RESULT_FAILURE_UNKNOWN_ERROR;
+  }
+
+  if (error_code == ConnectTetheringOperation::HostResponseErrorCode::
+                        INVALID_HOTSPOT_CREDENTIALS) {
+    return HostConnectionMetricsLogger::ConnectionToHostResult::
+        CONNECTION_RESULT_FAILURE_INVALID_HOTSPOT_CREDENTIALS;
+  }
+
   return HostConnectionMetricsLogger::ConnectionToHostResult::
-      CONNECTION_RESULT_FAILURE_UNKNOWN_ERROR;
+      CONNECTION_RESULT_FAILURE_NO_RESPONSE;
 }
 
 }  // namespace tether

chromeos/components/tether/tether_connector_impl.h

@@ -69,7 +69,7 @@ class TetherConnectorImpl : public TetherConnector,
       const std::string& password) override;
   void OnConnectTetheringFailure(
       const cryptauth::RemoteDevice& remote_device,
-      ConnectTetheringResponse_ResponseCode error_code) override;
+      ConnectTetheringOperation::HostResponseErrorCode error_code) override;
 
  private:
   friend class TetherConnectorImplTest;
@@ -88,7 +88,7 @@ class TetherConnectorImpl : public TetherConnector,
   HostConnectionMetricsLogger::ConnectionToHostResult
   GetConnectionToHostResultFromErrorCode(
       const std::string& device_id,
-      ConnectTetheringResponse_ResponseCode error_code);
+      ConnectTetheringOperation::HostResponseErrorCode error_code);
 
   NetworkConnectionHandler* network_connection_handler_;
   NetworkStateHandler* network_state_handler_;

chromeos/components/tether/tether_connector_impl_unittest.cc

@@ -82,7 +82,8 @@ class FakeConnectTetheringOperation : public ConnectTetheringOperation {
     NotifyObserversOfSuccessfulResponse(ssid, password);
   }
 
-  void SendFailedResponse(ConnectTetheringResponse_ResponseCode error_code) {
+  void SendFailedResponse(
+      ConnectTetheringOperation::HostResponseErrorCode error_code) {
     NotifyObserversOfConnectionFailure(error_code);
   }
 
@@ -254,7 +255,7 @@ class TetherConnectorImplTest : public NetworkStateTest {
   }
 
   void VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode response_code,
+      ConnectTetheringOperation::HostResponseErrorCode response_code,
       bool setup_required,
       HostConnectionMetricsLogger::ConnectionToHostResult expected_event_type) {
     EXPECT_CALL(*mock_host_connection_metrics_logger_,
@@ -400,8 +401,7 @@ TEST_F(TetherConnectorImplTest, TestCancelWhileOperationActive) {
 TEST_F(TetherConnectorImplTest,
        TestConnectTetheringOperationFails_SetupNotRequired) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_UNKNOWN_ERROR,
+      ConnectTetheringOperation::HostResponseErrorCode::UNKNOWN_ERROR,
       false /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_FAILURE_UNKNOWN_ERROR);
@@ -410,8 +410,7 @@ TEST_F(TetherConnectorImplTest,
 TEST_F(TetherConnectorImplTest,
        TestConnectTetheringOperationFails_SetupRequired) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_UNKNOWN_ERROR,
+      ConnectTetheringOperation::HostResponseErrorCode::UNKNOWN_ERROR,
       true /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_FAILURE_UNKNOWN_ERROR);
@@ -420,8 +419,7 @@ TEST_F(TetherConnectorImplTest,
 TEST_F(TetherConnectorImplTest,
        TestConnectTetheringOperationFails_ProvisioningFailed) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_PROVISIONING_FAILED,
+      ConnectTetheringOperation::HostResponseErrorCode::PROVISIONING_FAILED,
       false /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_PROVISIONING_FAILED);
@@ -430,8 +428,7 @@ TEST_F(TetherConnectorImplTest,
 TEST_F(TetherConnectorImplTest,
        TestConnectTetheringOperationFails_TetheringTimeout_SetupNotRequired) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_TETHERING_TIMEOUT,
+      ConnectTetheringOperation::HostResponseErrorCode::TETHERING_TIMEOUT,
       false /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_FAILURE_TETHERING_TIMED_OUT_FIRST_TIME_SETUP_WAS_NOT_REQUIRED);
@@ -440,8 +437,7 @@ TEST_F(TetherConnectorImplTest,
 TEST_F(TetherConnectorImplTest,
        TestConnectTetheringOperationFails_TetheringTimeout_SetupRequired) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_TETHERING_TIMEOUT,
+      ConnectTetheringOperation::HostResponseErrorCode::TETHERING_TIMEOUT,
       true /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_FAILURE_TETHERING_TIMED_OUT_FIRST_TIME_SETUP_WAS_REQUIRED);
@@ -450,8 +446,7 @@ TEST_F(TetherConnectorImplTest,
 TEST_F(TetherConnectorImplTest,
        TestConnectTetheringOperationFails_TetheringUnsupported) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_TETHERING_UNSUPPORTED,
+      ConnectTetheringOperation::HostResponseErrorCode::TETHERING_UNSUPPORTED,
       false /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_FAILURE_TETHERING_UNSUPPORTED);
@@ -459,8 +454,7 @@ TEST_F(TetherConnectorImplTest,
 
 TEST_F(TetherConnectorImplTest, TestConnectTetheringOperationFails_NoCellData) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_NO_CELL_DATA,
+      ConnectTetheringOperation::HostResponseErrorCode::NO_CELL_DATA,
       false /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_FAILURE_NO_CELL_DATA);
@@ -469,8 +463,7 @@ TEST_F(TetherConnectorImplTest, TestConnectTetheringOperationFails_NoCellData) {
 TEST_F(TetherConnectorImplTest,
        TestConnectTetheringOperationFails_EnableHotspotFailed) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_ENABLING_HOTSPOT_FAILED,
+      ConnectTetheringOperation::HostResponseErrorCode::ENABLING_HOTSPOT_FAILED,
       false /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_FAILURE_ENABLING_HOTSPOT_FAILED);
@@ -479,13 +472,31 @@ TEST_F(TetherConnectorImplTest,
 TEST_F(TetherConnectorImplTest,
        TestConnectTetheringOperationFails_EnableHotspotTimeout) {
   VerifyConnectTetheringOperationFails(
-      ConnectTetheringResponse_ResponseCode::
-          ConnectTetheringResponse_ResponseCode_ENABLING_HOTSPOT_TIMEOUT,
+      ConnectTetheringOperation::HostResponseErrorCode::
+          ENABLING_HOTSPOT_TIMEOUT,
       false /* setup_required */,
       HostConnectionMetricsLogger::ConnectionToHostResult::
           CONNECTION_RESULT_FAILURE_ENABLING_HOTSPOT_TIMEOUT);
 }
 
+TEST_F(TetherConnectorImplTest, TestConnectTetheringOperationFails_NoResponse) {
+  VerifyConnectTetheringOperationFails(
+      ConnectTetheringOperation::HostResponseErrorCode::NO_RESPONSE,
+      false /* setup_required */,
+      HostConnectionMetricsLogger::ConnectionToHostResult::
+          CONNECTION_RESULT_FAILURE_NO_RESPONSE);
+}
+
+TEST_F(TetherConnectorImplTest,
+       TestConnectTetheringOperationFails_InvalidHotspotCredentials) {
+  VerifyConnectTetheringOperationFails(
+      ConnectTetheringOperation::HostResponseErrorCode::
+          INVALID_HOTSPOT_CREDENTIALS,
+      false /* setup_required */,
+      HostConnectionMetricsLogger::ConnectionToHostResult::
+          CONNECTION_RESULT_FAILURE_INVALID_HOTSPOT_CREDENTIALS);
+}
+
 TEST_F(TetherConnectorImplTest,
        ConnectionToHostFailedNotificationRemovedWhenConnectionStarts) {
   // Start with the "connection to host failed" notification showing.

tools/metrics/histograms/enums.xml

@@ -23869,6 +23869,8 @@ Called by update_gpu_driver_bug_workaround_entries.py.-->
   <int value="4" label="No cellular data"/>
   <int value="5" label="Enabling hotspot failed"/>
   <int value="6" label="Enabling hotspot timed out"/>
+  <int value="7" label="No response"/>
+  <int value="8" label="Invalid hotspot credentials"/>
 </enum>
 
 <enum name="InstantTethering_ConnectionToHostResult_Failure_ClientConnection">