cryptohome: Add dbus method and signal name for encryption migration.

chromeos/dbus/fake_cryptohome_client.cc

Index: chromeos/dbus/fake_cryptohome_client.cc
diff --git a/chromeos/dbus/fake_cryptohome_client.cc b/chromeos/dbus/fake_cryptohome_client.cc
index 8d7e841c85714ee05693669398a561b7c049d368..f7f117391d40a89fe5b6772eb16ba66a1f5b60e8 100644
--- a/chromeos/dbus/fake_cryptohome_client.cc
+++ b/chromeos/dbus/fake_cryptohome_client.cc
@@ -63,6 +63,9 @@ void FakeCryptohomeClient::ResetAsyncCallStatusHandlers() {
 void FakeCryptohomeClient::SetLowDiskSpaceHandler(
     const LowDiskSpaceHandler& handler) {}
 
+void FakeCryptohomeClient::SetDircryptoMigrationProgressHandler(
+    const DircryptoMigrationProgessHandler& handler) {}
+
 void FakeCryptohomeClient::WaitForServiceToBeAvailable(
     const WaitForServiceToBeAvailableCallback& callback) {
   if (service_is_available_) {
@@ -574,6 +577,14 @@ void FakeCryptohomeClient::FlushAndSignBootAttributes(
   ReturnProtobufMethodCallback(reply, callback);
 }
 
+void FakeCryptohomeClient::MigrateToDircrypto(
+    const cryptohome::Identification& cryptohome_id,
+    const cryptohome::AuthorizationRequest& auth,
+    const VoidDBusMethodCallback& callback) {
+  base::ThreadTaskRunnerHandle::Get()->PostTask(
+      FROM_HERE, base::Bind(callback, DBUS_METHOD_CALL_SUCCESS));
+}
+
 void FakeCryptohomeClient::SetServiceIsAvailable(bool is_available) {
   service_is_available_ = is_available;
   if (is_available) {