Making OAuth2TokenService multi-login aware, updating callers, minor fixes

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 128fb6ed190b141be5030cd28621168fd23b13e3..620103a3fbeb06572f69b4c73a5a781eb1eb0a98 100644
--- a/chrome/browser/extensions/api/identity/identity_api.cc
+++ b/chrome/browser/extensions/api/identity/identity_api.cc
@@ -222,7 +222,7 @@ void IdentityGetAuthTokenFunction::StartMintToken(
                                                    oauth2_info.scopes.end());
             device_token_request_ =
                 chromeos::DeviceOAuth2TokenServiceFactory::Get()->StartRequest(
-                    scope_set, this);
+                    std::string(), scope_set, this);
           } else {
             gaia_mint_token_mode_ = OAuth2MintTokenFlow::MODE_MINT_TOKEN_FORCE;
             StartLoginAccessTokenRequest();
@@ -425,7 +425,8 @@ void IdentityGetAuthTokenFunction::StartLoginAccessTokenRequest() {
     if (chromeos::UserManager::Get()->GetAppModeChromeClientOAuthInfo(
            &app_client_id, &app_client_secret)) {
       login_token_request_ =
-          service->StartRequestForClient(app_client_id,
+          service->StartRequestForClient(std::string(),
+                                         app_client_id,
                                          app_client_secret,
                                          OAuth2TokenService::ScopeSet(),
                                          this);
@@ -433,8 +434,8 @@ void IdentityGetAuthTokenFunction::StartLoginAccessTokenRequest() {
     }
   }
 #endif
-  login_token_request_ = service->StartRequest(OAuth2TokenService::ScopeSet(),
-                                               this);
+  login_token_request_ = service->StartRequest(
+      service->GetPrimaryAccountId(), OAuth2TokenService::ScopeSet(), this);
 }
 
 void IdentityGetAuthTokenFunction::StartGaiaRequest(
@@ -478,8 +479,10 @@ OAuth2MintTokenFlow* IdentityGetAuthTokenFunction::CreateMintTokenFlow(
 }
 
 bool IdentityGetAuthTokenFunction::HasLoginToken() const {
-  return ProfileOAuth2TokenServiceFactory::GetForProfile(profile())->
-      RefreshTokenIsAvailable();
+  ProfileOAuth2TokenService* token_service =
+      ProfileOAuth2TokenServiceFactory::GetForProfile(profile());
+  return token_service->RefreshTokenIsAvailable(
+      token_service->GetPrimaryAccountId());
 }
 
 std::string IdentityGetAuthTokenFunction::MapOAuth2ErrorToDescription(