Convert Authenticator to BindOnce/OnceCallback

Bug: 1007662
Change-Id: I31c5de09e2e0e18daf316b519a86cdabdb50be11
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2375005Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: Austin Tankiang <austinct@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801688}

chromeos/services/secure_channel/authenticator.h

@@ -39,10 +39,10 @@ class Authenticator {
   // If the authentication protocol succeeds, then |secure_context| will be
   // contain the SecureContext used to securely exchange messages. Otherwise, it
   // will be null if the protocol fails.
-  typedef base::Callback<void(Result result,
-                              std::unique_ptr<SecureContext> secure_context)>
+  typedef base::OnceCallback<
+      void(Result result, std::unique_ptr<SecureContext> secure_context)>
       AuthenticationCallback;
-  virtual void Authenticate(const AuthenticationCallback& callback) = 0;
+  virtual void Authenticate(AuthenticationCallback callback) = 0;
 };
 
 }  // namespace secure_channel

chromeos/services/secure_channel/device_to_device_authenticator.cc

@@ -71,15 +71,15 @@ DeviceToDeviceAuthenticator::~DeviceToDeviceAuthenticator() {
 }
 
 void DeviceToDeviceAuthenticator::Authenticate(
-    const AuthenticationCallback& callback) {
+    AuthenticationCallback callback) {
   if (state_ != State::NOT_STARTED) {
     PA_LOG(ERROR)
         << "Authenticator was already used. Do not reuse this instance!";
-    callback.Run(Result::FAILURE, nullptr);
+    std::move(callback).Run(Result::FAILURE, nullptr);
     return;
   }
 
-  callback_ = callback;
+  callback_ = std::move(callback);
   if (!connection_->IsConnected()) {
     Fail("Not connected to remote device", Result::DISCONNECTED);
     return;
@@ -90,7 +90,7 @@ void DeviceToDeviceAuthenticator::Authenticate(
   // Generate a key-pair for this individual session.
   state_ = State::GENERATING_SESSION_KEYS;
   secure_message_delegate_->GenerateKeyPair(
-      base::Bind(&DeviceToDeviceAuthenticator::OnKeyPairGenerated,
+      base::BindOnce(&DeviceToDeviceAuthenticator::OnKeyPairGenerated,
                      weak_ptr_factory_.GetWeakPtr()));
 }
 
@@ -109,7 +109,7 @@ void DeviceToDeviceAuthenticator::OnKeyPairGenerated(
   helper_->CreateHelloMessage(
       public_key, connection_->remote_device().persistent_symmetric_key(),
       secure_message_delegate_.get(),
-      base::Bind(&DeviceToDeviceAuthenticator::OnHelloMessageCreated,
+      base::BindOnce(&DeviceToDeviceAuthenticator::OnHelloMessageCreated,
                      weak_ptr_factory_.GetWeakPtr()));
 }
 
@@ -163,7 +163,7 @@ void DeviceToDeviceAuthenticator::OnResponderAuthValidated(
   helper_->CreateInitiatorAuthMessage(
       session_keys_, connection_->remote_device().persistent_symmetric_key(),
       responder_auth_message_, secure_message_delegate_.get(),
-      base::Bind(&DeviceToDeviceAuthenticator::OnInitiatorAuthCreated,
+      base::BindOnce(&DeviceToDeviceAuthenticator::OnInitiatorAuthCreated,
                      weak_ptr_factory_.GetWeakPtr()));
 }
 
@@ -192,7 +192,7 @@ void DeviceToDeviceAuthenticator::Fail(const std::string& error_message,
   weak_ptr_factory_.InvalidateWeakPtrs();
   connection_->RemoveObserver(this);
   timer_.reset();
-  callback_.Run(result, nullptr);
+  std::move(callback_).Run(result, nullptr);
 }
 
 void DeviceToDeviceAuthenticator::Succeed() {
@@ -203,7 +203,7 @@ void DeviceToDeviceAuthenticator::Succeed() {
 
   state_ = State::AUTHENTICATION_SUCCESS;
   connection_->RemoveObserver(this);
-  callback_.Run(
+  std::move(callback_).Run(
       Result::SUCCESS,
       std::make_unique<DeviceToDeviceSecureContext>(
           std::move(secure_message_delegate_), session_keys_,
@@ -240,7 +240,7 @@ void DeviceToDeviceAuthenticator::OnMessageReceived(
         connection_->remote_device().persistent_symmetric_key(),
         local_session_private_key_, hello_message_,
         secure_message_delegate_.get(),
-        base::Bind(&DeviceToDeviceAuthenticator::OnResponderAuthValidated,
+        base::BindOnce(&DeviceToDeviceAuthenticator::OnResponderAuthValidated,
                        weak_ptr_factory_.GetWeakPtr()));
   } else {
     Fail("Unexpected message received");

chromeos/services/secure_channel/device_to_device_authenticator.h

@@ -80,7 +80,7 @@ class DeviceToDeviceAuthenticator : public Authenticator,
   ~DeviceToDeviceAuthenticator() override;
 
   // Authenticator:
-  void Authenticate(const AuthenticationCallback& callback) override;
+  void Authenticate(AuthenticationCallback callback) override;
 
  protected:
   // Creates a base::OneShotTimer instance. Exposed for testing.

chromeos/services/secure_channel/device_to_device_authenticator_unittest.cc

@@ -163,13 +163,13 @@ class SecureChannelDeviceToDeviceAuthenticatorTest : public testing::Test {
 
     secure_message_delegate_->DeriveKey(
         remote_session_private_key_, local_session_public_key_,
-        base::Bind(&SaveStringResult, &session_symmetric_key_));
+        base::BindOnce(&SaveStringResult, &session_symmetric_key_));
   }
 
   // Begins authentication, and returns the [Hello] message sent from the local
   // device to the remote device.
   std::string BeginAuthentication() {
-    authenticator_.Authenticate(base::Bind(
+    authenticator_.Authenticate(base::BindOnce(
         &SecureChannelDeviceToDeviceAuthenticatorTest::OnAuthenticationResult,
         base::Unretained(this)));
 
@@ -182,7 +182,7 @@ class SecureChannelDeviceToDeviceAuthenticatorTest : public testing::Test {
     DeviceToDeviceResponderOperations::ValidateHelloMessage(
         hello_message, remote_device_.persistent_symmetric_key(),
         secure_message_delegate_,
-        base::Bind(&SaveValidateHelloMessageResult, &validated,
+        base::BindOnce(&SaveValidateHelloMessageResult, &validated,
                        &local_session_public_key));
 
     EXPECT_TRUE(validated);
@@ -202,7 +202,7 @@ class SecureChannelDeviceToDeviceAuthenticatorTest : public testing::Test {
         hello_message, remote_session_public_key_, remote_session_private_key_,
         remote_device_private_key, remote_device_.persistent_symmetric_key(),
         secure_message_delegate_,
-        base::Bind(&SaveStringResult, &responder_auth_message));
+        base::BindOnce(&SaveStringResult, &responder_auth_message));
     EXPECT_FALSE(responder_auth_message.empty());
 
     WireMessage wire_message(responder_auth_message,
@@ -264,7 +264,7 @@ TEST_F(SecureChannelDeviceToDeviceAuthenticatorTest, AuthenticateSucceeds) {
       initiator_auth, SessionKeys(session_symmetric_key_),
       remote_device_.persistent_symmetric_key(), responder_auth_message,
       secure_message_delegate_,
-      base::Bind(&SaveBooleanResult, &initiator_auth_validated));
+      base::BindOnce(&SaveBooleanResult, &initiator_auth_validated));
   ASSERT_TRUE(initiator_auth_validated);
 }
 
@@ -304,7 +304,7 @@ TEST_F(SecureChannelDeviceToDeviceAuthenticatorTest, NotConnectedInitially) {
   connection_.Disconnect();
   EXPECT_CALL(*this,
               OnAuthenticationResultProxy(Authenticator::Result::DISCONNECTED));
-  authenticator_.Authenticate(base::Bind(
+  authenticator_.Authenticate(base::BindOnce(
       &SecureChannelDeviceToDeviceAuthenticatorTest::OnAuthenticationResult,
       base::Unretained(this)));
   EXPECT_FALSE(secure_context_);
@@ -314,7 +314,7 @@ TEST_F(SecureChannelDeviceToDeviceAuthenticatorTest, FailToSendHello) {
   connection_.set_connection_blocked(true);
   EXPECT_CALL(*this,
               OnAuthenticationResultProxy(Authenticator::Result::FAILURE));
-  authenticator_.Authenticate(base::Bind(
+  authenticator_.Authenticate(base::BindOnce(
       &SecureChannelDeviceToDeviceAuthenticatorTest::OnAuthenticationResult,
       base::Unretained(this)));
   EXPECT_FALSE(secure_context_);

chromeos/services/secure_channel/fake_authenticator.cc

@@ -15,8 +15,8 @@ FakeAuthenticator::FakeAuthenticator() {}
 FakeAuthenticator::~FakeAuthenticator() {}
 
 void FakeAuthenticator::Authenticate(
-    const Authenticator::AuthenticationCallback& callback) {
-  last_callback_ = callback;
+    Authenticator::AuthenticationCallback callback) {
+  last_callback_ = std::move(callback);
 }
 
 }  // namespace secure_channel

chromeos/services/secure_channel/fake_authenticator.h

@@ -20,9 +20,9 @@ class FakeAuthenticator : public Authenticator {
   ~FakeAuthenticator() override;
 
   // Authenticator:
-  void Authenticate(const AuthenticationCallback& callback) override;
+  void Authenticate(AuthenticationCallback callback) override;
 
-  AuthenticationCallback last_callback() { return last_callback_; }
+  AuthenticationCallback last_callback() { return std::move(last_callback_); }
 
  private:
   AuthenticationCallback last_callback_;