Delay fetching account info until OnRefreshTokensLoaded().

components/signin/core/browser/account_tracker_service.h

Index: components/signin/core/browser/account_tracker_service.h
diff --git a/components/signin/core/browser/account_tracker_service.h b/components/signin/core/browser/account_tracker_service.h
index 81baaa8dd12af4e5c33b75d0ba144f3661e1df5f..1cfb3835b2e8ed7857535e4d24915195834bc022 100644
--- a/components/signin/core/browser/account_tracker_service.h
+++ b/components/signin/core/browser/account_tracker_service.h
@@ -93,6 +93,10 @@ class AccountTrackerService : public KeyedService,
   AccountInfo FindAccountInfoByGaiaId(const std::string& gaia_id) const;
   AccountInfo FindAccountInfoByEmail(const std::string& email) const;
 
+  bool IsTrackingAccount(const std::string& account_id) const;
+  bool HasIdNameMappingForAccount(const std::string& account_id) const;
+  bool HasIdNameMappingForAllAccounts() const;
+
   // Picks the correct account_id for the specified account depending on the
   // migration state.
   std::string PickAccountIdForAccount(const std::string& gaia,