Support Sync following Gaia OAuth authentication

chrome/browser/sync/signin_manager.cc

Index: chrome/browser/sync/signin_manager.cc
diff --git a/chrome/browser/sync/signin_manager.cc b/chrome/browser/sync/signin_manager.cc
index 6156351c003a86c3fce9c449a658f6e010cd014c..1c04c825603b6a2006df264b0124f7b9a277f2f5 100644
--- a/chrome/browser/sync/signin_manager.cc
+++ b/chrome/browser/sync/signin_manager.cc
@@ -32,10 +32,14 @@ void SigninManager::RegisterUserPrefs(PrefService* user_prefs) {
 
 void SigninManager::Initialize(Profile* profile) {
   profile_ = profile;
-  username_ = profile_->GetPrefs()->GetString(prefs::kGoogleServicesUsername);
+  if (SyncSetupWizard::IsUsingOAuth())
+    oauth_username_ =
+        profile_->GetPrefs()->GetString(prefs::kGoogleServicesUsername);
+  else
+    username_ = profile_->GetPrefs()->GetString(prefs::kGoogleServicesUsername);
   profile_->GetTokenService()->Initialize(
       GaiaConstants::kChromeSource, profile_);
-  if (!username_.empty()) {
+  if (!username_.empty() || !oauth_username_.empty()) {
     profile_->GetTokenService()->LoadTokensFromDB();
   }
 }
@@ -59,11 +63,16 @@ void SigninManager::CleanupNotificationRegistration() {
 
 // If a username already exists, the user is logged in.
 const std::string& SigninManager::GetUsername() {
+  if (SyncSetupWizard::IsUsingOAuth())
+    return oauth_username_;
   return username_;
 }
 
 void SigninManager::SetUsername(const std::string& username) {
-  username_ = username;
+  if (SyncSetupWizard::IsUsingOAuth())
+    oauth_username_ = username;
+  else
+    username_ = username;
 }
 
 // static
@@ -77,14 +86,26 @@ void SigninManager::PrepareForSignin() {
 #endif
 }
 
+// static
+void SigninManager::PrepareForOAuthSignin() {
+  DCHECK(oauth_username_.empty());
+#if !defined(OS_CHROMEOS)
+  // The Sign out should clear the token service credentials.
+  // Note: In CHROMEOS we might have valid credentials but still need to
+  // set up 2-factor authentication.
+  DCHECK(!profile_->GetTokenService()->AreOAuthCredentialsValid());
+#endif
+}
+
 // Users must always sign out before they sign in again.
 void SigninManager::StartOAuthSignIn() {
-  PrepareForSignin();
+  PrepareForOAuthSignin();
   oauth_login_.reset(new GaiaOAuthFetcher(this,
                                           profile_->GetRequestContext(),
                                           profile_,
                                           GaiaConstants::kSyncServiceOAuth));
   oauth_login_->StartGetOAuthToken();
+  // TODO(rogerta?): Bug 92325: Expand Autologin to include OAuth signin
 }
 
 // Users must always sign out before they sign in again.
@@ -143,9 +164,11 @@ void SigninManager::SignOut() {
   client_login_.reset();
   last_result_ = ClientLoginResult();
   username_.clear();
+  oauth_username_.clear();
   password_.clear();
   had_two_factor_error_ = false;
-  profile_->GetPrefs()->SetString(prefs::kGoogleServicesUsername, username_);
+  profile_->GetPrefs()->ClearPref(prefs::kGoogleServicesUsername);
+  profile_->GetPrefs()->ClearPref(prefs::kSyncUsingOAuth, false);
   profile_->GetPrefs()->ScheduleSavePersistentPrefs();
   profile_->GetTokenService()->ResetCredentialsInMemory();
   profile_->GetTokenService()->EraseTokensFromDB();
@@ -157,12 +180,14 @@ void SigninManager::OnClientLoginSuccess(const ClientLoginResult& result) {
   client_login_->StartGetUserInfo(result.lsid, kGetInfoEmailKey);
 }
 
+// NOTE: GetUserInfo is a ClientLogin request similar to OAuth's userinfo
 void SigninManager::OnGetUserInfoSuccess(const std::string& key,
                                          const std::string& value) {
   DCHECK(key == kGetInfoEmailKey);
 
   username_ = value;
   profile_->GetPrefs()->SetString(prefs::kGoogleServicesUsername, username_);
+  profile_->GetPrefs()->SetBoolean(prefs::kSyncUsingOAuth, false);
   profile_->GetPrefs()->ScheduleSavePersistentPrefs();
 
   GoogleServiceSigninSuccessDetails details(username_, password_);
@@ -223,17 +248,18 @@ void SigninManager::OnGetOAuthTokenSuccess(const std::string& oauth_token) {
 }
 
 void SigninManager::OnGetOAuthTokenFailure() {
-  VLOG(1) << "SigninManager::OnGetOAuthTokenFailure";
+  LOG(WARNING) << "SigninManager::OnGetOAuthTokenFailure";
 }
 
 void SigninManager::OnOAuthGetAccessTokenSuccess(const std::string& token,
                                                  const std::string& secret) {
   VLOG(1) << "SigninManager::OnOAuthGetAccessTokenSuccess";
+  profile_->GetTokenService()->UpdateOAuthCredentials(token, secret);
 }
 
 void SigninManager::OnOAuthGetAccessTokenFailure(
     const GoogleServiceAuthError& error) {
-  VLOG(1) << "SigninManager::OnOAuthGetAccessTokenFailure";
+  LOG(WARNING) << "SigninManager::OnOAuthGetAccessTokenFailure";
 }
 
 void SigninManager::OnOAuthWrapBridgeSuccess(const std::string& service_name,
@@ -245,15 +271,31 @@ void SigninManager::OnOAuthWrapBridgeSuccess(const std::string& service_name,
 void SigninManager::OnOAuthWrapBridgeFailure(
     const std::string& service_scope,
     const GoogleServiceAuthError& error) {
-  VLOG(1) << "SigninManager::OnOAuthWrapBridgeFailure";
+  LOG(WARNING) << "SigninManager::OnOAuthWrapBridgeFailure";
 }
 
+// NOTE: userinfo is an OAuth request similar to ClientLogin's GetUserInfo
 void SigninManager::OnUserInfoSuccess(const std::string& email) {
-  VLOG(1) << "SigninManager::OnUserInfoSuccess(\"" << email << "\")";
+  VLOG(1) << "Sync signin for " << email << " is complete.";
+  oauth_username_ = email;
+  profile_->GetPrefs()->SetString(
+      prefs::kGoogleServicesUsername, oauth_username_);
+  profile_->GetPrefs()->SetBoolean(prefs::kSyncUsingOAuth, true);
+  profile_->GetPrefs()->ScheduleSavePersistentPrefs();
+
+  DCHECK(password_.empty());
+  GoogleServiceSigninSuccessDetails details(oauth_username_, "");
+  NotificationService::current()->Notify(
+      chrome::NOTIFICATION_GOOGLE_SIGNIN_SUCCESSFUL,
+      Source<Profile>(profile_),
+      Details<const GoogleServiceSigninSuccessDetails>(&details));
+
+  DCHECK(profile_->GetTokenService()->AreOAuthCredentialsValid());
+  profile_->GetTokenService()->StartFetchingOAuthTokens();
 }
 
 void SigninManager::OnUserInfoFailure(const GoogleServiceAuthError& error) {
-  VLOG(1) << "SigninManager::OnUserInfoFailure";
+  LOG(WARNING) << "SigninManager::OnUserInfoFailure";
 }
 
 void SigninManager::Observe(int type,