Changed some fingerprint constants.

Changed ScanFailed -> SessionFailed as per mqg@ request. Changed enum to enum class.

BUG=672269

Change-Id: I62d5515ee9b7fb455d2b1d0176e6042226010a03
Reviewed-on: https://chromium-review.googlesource.com/455465
Commit-Ready: Mengqi Guo <mqg@chromium.org>
Tested-by: Sammie Quon <sammiequon@chromium.org>
Reviewed-by: Mengqi Guo <mqg@chromium.org>
diff --git a/dbus/service_constants.h b/dbus/service_constants.h
index 31144a6..86d6b0a 100644
--- a/dbus/service_constants.h
+++ b/dbus/service_constants.h
@@ -994,7 +994,7 @@
 // Signals
 const char kBiometricsManagerEnrollScanDoneSignal[] = "EnrollScanDone";
 const char kBiometricsManagerAuthScanDoneSignal[] = "AuthScanDone";
-const char kBiometricsManagerScanFailedSignal[] = "ScanFailed";
+const char kBiometricsManagerSessionFailedSignal[] = "SessionFailed";
 
 // Properties
 const char kBiometricsManagerBiometricTypeProperty[] = "Type";
@@ -1002,18 +1002,19 @@
 
 // Values
 enum BiometricType {
-  BIOMETRIC_FINGERPRINT = 0,
-  BIOMETRIC_RETINA = 1,
-  BIOMETRIC_FACE = 2,
-  BIOMETRIC_VOICE = 3,
+  BIOMETRIC_TYPE_UNKNOWN = 0,
+  BIOMETRIC_TYPE_FINGERPRINT = 1,
+  BIOMETRIC_TYPE_MAX,
 };
-enum ScanResultType {
+enum ScanResult {
   SCAN_RESULT_SUCCESS = 0,
   SCAN_RESULT_PARTIAL = 1,
   SCAN_RESULT_INSUFFICIENT = 2,
   SCAN_RESULT_SENSOR_DIRTY = 3,
   SCAN_RESULT_TOO_SLOW = 4,
   SCAN_RESULT_TOO_FAST = 5,
+  SCAN_RESULT_IMMOBILE = 6,
+  SCAN_RESULT_MAX,
 };
 }  // namespace biod