Move impl of identity.GetAuthToken() extension API to its own file

chrome/browser/extensions/api/identity/identity_api.cc

Index: chrome/browser/extensions/api/identity/identity_api.cc
diff --git a/chrome/browser/extensions/api/identity/identity_api.cc b/chrome/browser/extensions/api/identity/identity_api.cc
index 4b74c3fe3091562a2cdfa3c8fab47451caee05a5..44d1e1379404a969e9e4d40e3662e863c1637b60 100644
--- a/chrome/browser/extensions/api/identity/identity_api.cc
+++ b/chrome/browser/extensions/api/identity/identity_api.cc
@@ -47,37 +47,8 @@
 #include "google_apis/gaia/gaia_urls.h"
 #include "url/gurl.h"
 
-#if defined(OS_CHROMEOS)
-#include "chrome/browser/chromeos/login/session/user_session_manager.h"
-#include "chrome/browser/chromeos/policy/browser_policy_connector_chromeos.h"
-#include "chrome/browser/chromeos/settings/device_oauth2_token_service.h"
-#include "chrome/browser/chromeos/settings/device_oauth2_token_service_factory.h"
-#include "components/user_manager/user_manager.h"
-#include "google_apis/gaia/gaia_constants.h"
-#endif
-
 namespace extensions {
 
-namespace {
-
-#if defined(OS_CHROMEOS)
-// The list of apps that are allowed to use the Identity API to retrieve the
-// token from the device robot account in a public session.
-const char* const kPublicSessionAllowedOrigins[] = {
-    // Chrome Remote Desktop - Chromium branding.
-    "chrome-extension://ljacajndfccfgnfohlgkdphmbnpkjflk/",
-    // Chrome Remote Desktop - Official branding.
-    "chrome-extension://gbchcmhmhahfdphkhkmpfmihenigjmpp/"};
-#endif
-
-std::string GetPrimaryAccountId(content::BrowserContext* context) {
-  SigninManagerBase* signin_manager =
-      SigninManagerFactory::GetForProfile(Profile::FromBrowserContext(context));
-  return signin_manager->GetAuthenticatedAccountId();
-}
-
-}  // namespace
-
 namespace identity = api::identity;
 
 IdentityTokenCacheValue::IdentityTokenCacheValue()
@@ -186,7 +157,6 @@ const IdentityAPI::CachedTokens& IdentityAPI::GetAllCachedTokens() {
 }
 
 std::vector<std::string> IdentityAPI::GetAccounts() const {
-  const std::string primary_account_id = GetPrimaryAccountId(browser_context_);
   const std::vector<gaia::AccountIds> ids = account_tracker_.GetAccounts();
   std::vector<std::string> gaia_ids;
 
@@ -282,595 +252,4 @@ ExtensionFunction::ResponseAction IdentityGetAccountsFunction::Run() {
   return RespondNow(OneArgument(std::move(infos)));
 }
 
-IdentityGetAuthTokenFunction::IdentityGetAuthTokenFunction()
-    : OAuth2TokenService::Consumer("extensions_identity_api"),
-      interactive_(false),
-      should_prompt_for_scopes_(false),
-      should_prompt_for_signin_(false) {
-}
-
-IdentityGetAuthTokenFunction::~IdentityGetAuthTokenFunction() {
-  TRACE_EVENT_ASYNC_END0("identity", "IdentityGetAuthTokenFunction", this);
-}
-
-bool IdentityGetAuthTokenFunction::RunAsync() {
-  TRACE_EVENT_ASYNC_BEGIN1("identity",
-                           "IdentityGetAuthTokenFunction",
-                           this,
-                           "extension",
-                           extension()->id());
-
-  if (GetProfile()->IsOffTheRecord()) {
-    error_ = identity_constants::kOffTheRecord;
-    return false;
-  }
-
-  std::unique_ptr<identity::GetAuthToken::Params> params(
-      identity::GetAuthToken::Params::Create(*args_));
-  EXTENSION_FUNCTION_VALIDATE(params.get());
-  interactive_ = params->details.get() &&
-      params->details->interactive.get() &&
-      *params->details->interactive;
-
-  should_prompt_for_scopes_ = interactive_;
-  should_prompt_for_signin_ = interactive_;
-
-  const OAuth2Info& oauth2_info = OAuth2Info::GetOAuth2Info(extension());
-
-  // Check that the necessary information is present in the manifest.
-  oauth2_client_id_ = GetOAuth2ClientId();
-  if (oauth2_client_id_.empty()) {
-    error_ = identity_constants::kInvalidClientId;
-    return false;
-  }
-
-  std::set<std::string> scopes(oauth2_info.scopes.begin(),
-                               oauth2_info.scopes.end());
-
-  std::string account_key = GetPrimaryAccountId(GetProfile());
-
-  if (params->details.get()) {
-    if (params->details->account.get()) {
-      std::string detail_key =
-          extensions::IdentityAPI::GetFactoryInstance()
-              ->Get(GetProfile())
-              ->FindAccountKeyByGaiaId(params->details->account->id);
-
-      if (detail_key != account_key) {
-        if (detail_key.empty() || !switches::IsExtensionsMultiAccount()) {
-          // TODO(courage): should this be a different error?
-          error_ = identity_constants::kUserNotSignedIn;
-          return false;
-        }
-
-        account_key = detail_key;
-      }
-    }
-
-    if (params->details->scopes.get()) {
-      scopes = std::set<std::string>(params->details->scopes->begin(),
-                                     params->details->scopes->end());
-    }
-  }
-
-  if (scopes.size() == 0) {
-    error_ = identity_constants::kInvalidScopes;
-    return false;
-  }
-
-  token_key_.reset(
-      new ExtensionTokenKey(extension()->id(), account_key, scopes));
-
-  // From here on out, results must be returned asynchronously.
-  StartAsyncRun();
-
-#if defined(OS_CHROMEOS)
-  policy::BrowserPolicyConnectorChromeOS* connector =
-      g_browser_process->platform_part()->browser_policy_connector_chromeos();
-  bool is_kiosk = user_manager::UserManager::Get()->IsLoggedInAsKioskApp();
-  bool is_public_session =
-      user_manager::UserManager::Get()->IsLoggedInAsPublicAccount();
-
-  if (connector->IsEnterpriseManaged() && (is_kiosk || is_public_session)) {
-    if (is_public_session && !IsOriginWhitelistedInPublicSession()) {
-      CompleteFunctionWithError(identity_constants::kUserNotSignedIn);
-      return true;
-    }
-
-    StartMintTokenFlow(IdentityMintRequestQueue::MINT_TYPE_NONINTERACTIVE);
-    return true;
-  }
-#endif
-
-  if (!HasLoginToken()) {
-    if (!should_prompt_for_signin_) {
-      CompleteFunctionWithError(identity_constants::kUserNotSignedIn);
-      return true;
-    }
-    // Display a login prompt.
-    StartSigninFlow();
-  } else {
-    StartMintTokenFlow(IdentityMintRequestQueue::MINT_TYPE_NONINTERACTIVE);
-  }
-
-  return true;
-}
-
-void IdentityGetAuthTokenFunction::StartAsyncRun() {
-  // Balanced in CompleteAsyncRun
-  AddRef();
-  extensions::IdentityAPI::GetFactoryInstance()
-      ->Get(GetProfile())
-      ->set_get_auth_token_function(this);
-}
-
-void IdentityGetAuthTokenFunction::CompleteAsyncRun(bool success) {
-  extensions::IdentityAPI::GetFactoryInstance()
-      ->Get(GetProfile())
-      ->set_get_auth_token_function(nullptr);
-
-  SendResponse(success);
-  Release();  // Balanced in StartAsyncRun
-}
-
-void IdentityGetAuthTokenFunction::CompleteFunctionWithResult(
-    const std::string& access_token) {
-  SetResult(base::MakeUnique<base::StringValue>(access_token));
-  CompleteAsyncRun(true);
-}
-
-void IdentityGetAuthTokenFunction::CompleteFunctionWithError(
-    const std::string& error) {
-  TRACE_EVENT_ASYNC_STEP_PAST1("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "CompleteFunctionWithError",
-                               "error",
-                               error);
-  error_ = error;
-  CompleteAsyncRun(false);
-}
-
-void IdentityGetAuthTokenFunction::StartSigninFlow() {
-  // All cached tokens are invalid because the user is not signed in.
-  IdentityAPI* id_api =
-      extensions::IdentityAPI::GetFactoryInstance()->Get(GetProfile());
-  id_api->EraseAllCachedTokens();
-  // Display a login prompt. If the subsequent mint fails, don't display the
-  // login prompt again.
-  should_prompt_for_signin_ = false;
-  ShowLoginPopup();
-}
-
-void IdentityGetAuthTokenFunction::StartMintTokenFlow(
-    IdentityMintRequestQueue::MintType type) {
-  mint_token_flow_type_ = type;
-
-  // Flows are serialized to prevent excessive traffic to GAIA, and
-  // to consolidate UI pop-ups.
-  IdentityAPI* id_api =
-      extensions::IdentityAPI::GetFactoryInstance()->Get(GetProfile());
-
-  if (!should_prompt_for_scopes_) {
-    // Caller requested no interaction.
-
-    if (type == IdentityMintRequestQueue::MINT_TYPE_INTERACTIVE) {
-      // GAIA told us to do a consent UI.
-      CompleteFunctionWithError(identity_constants::kNoGrant);
-      return;
-    }
-    if (!id_api->mint_queue()->empty(
-            IdentityMintRequestQueue::MINT_TYPE_INTERACTIVE, *token_key_)) {
-      // Another call is going through a consent UI.
-      CompleteFunctionWithError(identity_constants::kNoGrant);
-      return;
-    }
-  }
-  id_api->mint_queue()->RequestStart(type, *token_key_, this);
-}
-
-void IdentityGetAuthTokenFunction::CompleteMintTokenFlow() {
-  IdentityMintRequestQueue::MintType type = mint_token_flow_type_;
-
-  extensions::IdentityAPI::GetFactoryInstance()
-      ->Get(GetProfile())
-      ->mint_queue()
-      ->RequestComplete(type, *token_key_, this);
-}
-
-void IdentityGetAuthTokenFunction::StartMintToken(
-    IdentityMintRequestQueue::MintType type) {
-  TRACE_EVENT_ASYNC_STEP_PAST1("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "StartMintToken",
-                               "type",
-                               type);
-
-  const OAuth2Info& oauth2_info = OAuth2Info::GetOAuth2Info(extension());
-  IdentityAPI* id_api = IdentityAPI::GetFactoryInstance()->Get(GetProfile());
-  IdentityTokenCacheValue cache_entry = id_api->GetCachedToken(*token_key_);
-  IdentityTokenCacheValue::CacheValueStatus cache_status =
-      cache_entry.status();
-
-  if (type == IdentityMintRequestQueue::MINT_TYPE_NONINTERACTIVE) {
-    switch (cache_status) {
-      case IdentityTokenCacheValue::CACHE_STATUS_NOTFOUND:
-#if defined(OS_CHROMEOS)
-        // Always force minting token for ChromeOS kiosk app and public session.
-        if (user_manager::UserManager::Get()->IsLoggedInAsPublicAccount() &&
-            !IsOriginWhitelistedInPublicSession()) {
-          CompleteFunctionWithError(identity_constants::kUserNotSignedIn);
-          return;
-        }
-
-        if (user_manager::UserManager::Get()->IsLoggedInAsKioskApp() ||
-            user_manager::UserManager::Get()->IsLoggedInAsPublicAccount()) {
-          gaia_mint_token_mode_ = OAuth2MintTokenFlow::MODE_MINT_TOKEN_FORCE;
-          policy::BrowserPolicyConnectorChromeOS* connector =
-              g_browser_process->platform_part()
-                  ->browser_policy_connector_chromeos();
-          if (connector->IsEnterpriseManaged()) {
-            StartDeviceLoginAccessTokenRequest();
-          } else {
-            StartLoginAccessTokenRequest();
-          }
-          return;
-        }
-#endif
-
-        if (oauth2_info.auto_approve)
-          // oauth2_info.auto_approve is protected by a whitelist in
-          // _manifest_features.json hence only selected extensions take
-          // advantage of forcefully minting the token.
-          gaia_mint_token_mode_ = OAuth2MintTokenFlow::MODE_MINT_TOKEN_FORCE;
-        else
-          gaia_mint_token_mode_ = OAuth2MintTokenFlow::MODE_MINT_TOKEN_NO_FORCE;
-        StartLoginAccessTokenRequest();
-        break;
-
-      case IdentityTokenCacheValue::CACHE_STATUS_TOKEN:
-        CompleteMintTokenFlow();
-        CompleteFunctionWithResult(cache_entry.token());
-        break;
-
-      case IdentityTokenCacheValue::CACHE_STATUS_ADVICE:
-        CompleteMintTokenFlow();
-        should_prompt_for_signin_ = false;
-        issue_advice_ = cache_entry.issue_advice();
-        StartMintTokenFlow(IdentityMintRequestQueue::MINT_TYPE_INTERACTIVE);
-        break;
-    }
-  } else {
-    DCHECK(type == IdentityMintRequestQueue::MINT_TYPE_INTERACTIVE);
-
-    if (cache_status == IdentityTokenCacheValue::CACHE_STATUS_TOKEN) {
-      CompleteMintTokenFlow();
-      CompleteFunctionWithResult(cache_entry.token());
-    } else {
-      ShowOAuthApprovalDialog(issue_advice_);
-    }
-  }
-}
-
-void IdentityGetAuthTokenFunction::OnMintTokenSuccess(
-    const std::string& access_token, int time_to_live) {
-  TRACE_EVENT_ASYNC_STEP_PAST0("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "OnMintTokenSuccess");
-
-  IdentityTokenCacheValue token(access_token,
-                                base::TimeDelta::FromSeconds(time_to_live));
-  IdentityAPI::GetFactoryInstance()->Get(GetProfile())->SetCachedToken(
-      *token_key_, token);
-
-  CompleteMintTokenFlow();
-  CompleteFunctionWithResult(access_token);
-}
-
-void IdentityGetAuthTokenFunction::OnMintTokenFailure(
-    const GoogleServiceAuthError& error) {
-  TRACE_EVENT_ASYNC_STEP_PAST1("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "OnMintTokenFailure",
-                               "error",
-                               error.ToString());
-  CompleteMintTokenFlow();
-  switch (error.state()) {
-    case GoogleServiceAuthError::SERVICE_ERROR:
-      if (interactive_) {
-        StartSigninFlow();
-        return;
-      }
-      break;
-    case GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS:
-    case GoogleServiceAuthError::ACCOUNT_DELETED:
-    case GoogleServiceAuthError::ACCOUNT_DISABLED:
-      // TODO(courage): flush ticket and retry once
-      if (should_prompt_for_signin_) {
-        // Display a login prompt and try again (once).
-        StartSigninFlow();
-        return;
-      }
-      break;
-    default:
-      // Return error to caller.
-      break;
-  }
-
-  CompleteFunctionWithError(
-      std::string(identity_constants::kAuthFailure) + error.ToString());
-}
-
-void IdentityGetAuthTokenFunction::OnIssueAdviceSuccess(
-    const IssueAdviceInfo& issue_advice) {
-  TRACE_EVENT_ASYNC_STEP_PAST0("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "OnIssueAdviceSuccess");
-
-  IdentityAPI::GetFactoryInstance()->Get(GetProfile())->SetCachedToken(
-      *token_key_, IdentityTokenCacheValue(issue_advice));
-  CompleteMintTokenFlow();
-
-  should_prompt_for_signin_ = false;
-  // Existing grant was revoked and we used NO_FORCE, so we got info back
-  // instead. Start a consent UI if we can.
-  issue_advice_ = issue_advice;
-  StartMintTokenFlow(IdentityMintRequestQueue::MINT_TYPE_INTERACTIVE);
-}
-
-void IdentityGetAuthTokenFunction::SigninSuccess() {
-  TRACE_EVENT_ASYNC_STEP_PAST0("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "SigninSuccess");
-
-  // If there was no account associated this profile before the
-  // sign-in, we may not have an account_id in the token_key yet.
-  if (token_key_->account_id.empty()) {
-    token_key_->account_id = GetPrimaryAccountId(GetProfile());
-  }
-
-  StartMintTokenFlow(IdentityMintRequestQueue::MINT_TYPE_NONINTERACTIVE);
-}
-
-void IdentityGetAuthTokenFunction::SigninFailed() {
-  TRACE_EVENT_ASYNC_STEP_PAST0("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "SigninFailed");
-  CompleteFunctionWithError(identity_constants::kUserNotSignedIn);
-}
-
-void IdentityGetAuthTokenFunction::OnGaiaFlowFailure(
-    GaiaWebAuthFlow::Failure failure,
-    GoogleServiceAuthError service_error,
-    const std::string& oauth_error) {
-  CompleteMintTokenFlow();
-  std::string error;
-
-  switch (failure) {
-    case GaiaWebAuthFlow::WINDOW_CLOSED:
-      error = identity_constants::kUserRejected;
-      break;
-
-    case GaiaWebAuthFlow::INVALID_REDIRECT:
-      error = identity_constants::kInvalidRedirect;
-      break;
-
-    case GaiaWebAuthFlow::SERVICE_AUTH_ERROR:
-      // If this is really an authentication error and not just a transient
-      // network error, and this is an interactive request for a signed-in
-      // user, then we show signin UI instead of failing.
-      if (service_error.state() != GoogleServiceAuthError::CONNECTION_FAILED &&
-          service_error.state() !=
-              GoogleServiceAuthError::SERVICE_UNAVAILABLE &&
-          interactive_ && HasLoginToken()) {
-        StartSigninFlow();
-        return;
-      }
-      error = std::string(identity_constants::kAuthFailure) +
-          service_error.ToString();
-      break;
-
-    case GaiaWebAuthFlow::OAUTH_ERROR:
-      error = MapOAuth2ErrorToDescription(oauth_error);
-      break;
-
-    case GaiaWebAuthFlow::LOAD_FAILED:
-      error = identity_constants::kPageLoadFailure;
-      break;
-
-    default:
-      NOTREACHED() << "Unexpected error from gaia web auth flow: " << failure;
-      error = identity_constants::kInvalidRedirect;
-      break;
-  }
-
-  CompleteFunctionWithError(error);
-}
-
-void IdentityGetAuthTokenFunction::OnGaiaFlowCompleted(
-    const std::string& access_token,
-    const std::string& expiration) {
-  TRACE_EVENT_ASYNC_STEP_PAST0("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "OnGaiaFlowCompleted");
-  int time_to_live;
-  if (!expiration.empty() && base::StringToInt(expiration, &time_to_live)) {
-    IdentityTokenCacheValue token_value(
-        access_token, base::TimeDelta::FromSeconds(time_to_live));
-    IdentityAPI::GetFactoryInstance()->Get(GetProfile())->SetCachedToken(
-        *token_key_, token_value);
-  }
-
-  CompleteMintTokenFlow();
-  CompleteFunctionWithResult(access_token);
-}
-
-void IdentityGetAuthTokenFunction::OnGetTokenSuccess(
-    const OAuth2TokenService::Request* request,
-    const std::string& access_token,
-    const base::Time& expiration_time) {
-  TRACE_EVENT_ASYNC_STEP_PAST1("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "OnGetTokenSuccess",
-                               "account",
-                               request->GetAccountId());
-  login_token_request_.reset();
-  StartGaiaRequest(access_token);
-}
-
-void IdentityGetAuthTokenFunction::OnGetTokenFailure(
-    const OAuth2TokenService::Request* request,
-    const GoogleServiceAuthError& error) {
-  TRACE_EVENT_ASYNC_STEP_PAST1("identity",
-                               "IdentityGetAuthTokenFunction",
-                               this,
-                               "OnGetTokenFailure",
-                               "error",
-                               error.ToString());
-  login_token_request_.reset();
-  OnGaiaFlowFailure(GaiaWebAuthFlow::SERVICE_AUTH_ERROR, error, std::string());
-}
-
-void IdentityGetAuthTokenFunction::Shutdown() {
-  gaia_web_auth_flow_.reset();
-  signin_flow_.reset();
-  login_token_request_.reset();
-  extensions::IdentityAPI::GetFactoryInstance()
-      ->Get(GetProfile())
-      ->mint_queue()
-      ->RequestCancel(*token_key_, this);
-  CompleteFunctionWithError(identity_constants::kCanceled);
-}
-
-#if defined(OS_CHROMEOS)
-void IdentityGetAuthTokenFunction::StartDeviceLoginAccessTokenRequest() {
-  chromeos::DeviceOAuth2TokenService* service =
-      chromeos::DeviceOAuth2TokenServiceFactory::Get();
-  // Since robot account refresh tokens are scoped down to [any-api] only,
-  // request access token for [any-api] instead of login.
-  OAuth2TokenService::ScopeSet scopes;
-  scopes.insert(GaiaConstants::kAnyApiOAuth2Scope);
-  login_token_request_ =
-      service->StartRequest(service->GetRobotAccountId(),
-                            scopes,
-                            this);
-}
-
-bool IdentityGetAuthTokenFunction::IsOriginWhitelistedInPublicSession() {
-  DCHECK(extension());
-  GURL extension_url = extension()->url();
-  for (size_t i = 0; i < arraysize(kPublicSessionAllowedOrigins); i++) {
-    URLPattern allowed_origin(URLPattern::SCHEME_ALL,
-                              kPublicSessionAllowedOrigins[i]);
-    if (allowed_origin.MatchesSecurityOrigin(extension_url)) {
-      return true;
-    }
-  }
-  return false;
-}
-#endif
-
-void IdentityGetAuthTokenFunction::StartLoginAccessTokenRequest() {
-  ProfileOAuth2TokenService* service =
-      ProfileOAuth2TokenServiceFactory::GetForProfile(GetProfile());
-#if defined(OS_CHROMEOS)
-  if (chrome::IsRunningInForcedAppMode()) {
-    std::string app_client_id;
-    std::string app_client_secret;
-    if (chromeos::UserSessionManager::GetInstance()->
-            GetAppModeChromeClientOAuthInfo(&app_client_id,
-                                            &app_client_secret)) {
-      login_token_request_ =
-          service->StartRequestForClient(token_key_->account_id,
-                                         app_client_id,
-                                         app_client_secret,
-                                         OAuth2TokenService::ScopeSet(),
-                                         this);
-      return;
-    }
-  }
-#endif
-  login_token_request_ = service->StartRequest(
-      token_key_->account_id, OAuth2TokenService::ScopeSet(), this);
-}
-
-void IdentityGetAuthTokenFunction::StartGaiaRequest(
-    const std::string& login_access_token) {
-  DCHECK(!login_access_token.empty());
-  mint_token_flow_.reset(CreateMintTokenFlow());
-  mint_token_flow_->Start(GetProfile()->GetRequestContext(),
-                          login_access_token);
-}
-
-void IdentityGetAuthTokenFunction::ShowLoginPopup() {
-  signin_flow_.reset(new IdentitySigninFlow(this, GetProfile()));
-  signin_flow_->Start();
-}
-
-void IdentityGetAuthTokenFunction::ShowOAuthApprovalDialog(
-    const IssueAdviceInfo& issue_advice) {
-  const std::string locale = extension_l10n_util::CurrentLocaleOrDefault();
-
-  gaia_web_auth_flow_.reset(new GaiaWebAuthFlow(
-      this, GetProfile(), token_key_.get(), oauth2_client_id_, locale));
-  gaia_web_auth_flow_->Start();
-}
-
-OAuth2MintTokenFlow* IdentityGetAuthTokenFunction::CreateMintTokenFlow() {
-  SigninClient* signin_client =
-      ChromeSigninClientFactory::GetForProfile(GetProfile());
-  std::string signin_scoped_device_id =
-      signin_client->GetSigninScopedDeviceId();
-  OAuth2MintTokenFlow* mint_token_flow = new OAuth2MintTokenFlow(
-      this,
-      OAuth2MintTokenFlow::Parameters(
-          extension()->id(),
-          oauth2_client_id_,
-          std::vector<std::string>(token_key_->scopes.begin(),
-                                   token_key_->scopes.end()),
-          signin_scoped_device_id,
-          gaia_mint_token_mode_));
-  return mint_token_flow;
-}
-
-bool IdentityGetAuthTokenFunction::HasLoginToken() const {
-  ProfileOAuth2TokenService* token_service =
-      ProfileOAuth2TokenServiceFactory::GetForProfile(GetProfile());
-  return token_service->RefreshTokenIsAvailable(token_key_->account_id);
-}
-
-std::string IdentityGetAuthTokenFunction::MapOAuth2ErrorToDescription(
-    const std::string& error) {
-  const char kOAuth2ErrorAccessDenied[] = "access_denied";
-  const char kOAuth2ErrorInvalidScope[] = "invalid_scope";
-
-  if (error == kOAuth2ErrorAccessDenied)
-    return std::string(identity_constants::kUserRejected);
-  else if (error == kOAuth2ErrorInvalidScope)
-    return std::string(identity_constants::kInvalidScopes);
-  else
-    return std::string(identity_constants::kAuthFailure) + error;
-}
-
-std::string IdentityGetAuthTokenFunction::GetOAuth2ClientId() const {
-  const OAuth2Info& oauth2_info = OAuth2Info::GetOAuth2Info(extension());
-  std::string client_id = oauth2_info.client_id;
-
-  // Component apps using auto_approve may use Chrome's client ID by
-  // omitting the field.
-  if (client_id.empty() && extension()->location() == Manifest::COMPONENT &&
-      oauth2_info.auto_approve) {
-    client_id = GaiaUrls::GetInstance()->oauth2_chrome_client_id();
-  }
-  return client_id;
-}
-
 }  // namespace extensions