Eliminate usage of PO2TS::GetPrimaryAccountID() in UbertokenFetcher.

chrome/browser/android/signin/signin_manager_android.cc

Index: chrome/browser/android/signin/signin_manager_android.cc
diff --git a/chrome/browser/android/signin/signin_manager_android.cc b/chrome/browser/android/signin/signin_manager_android.cc
index af22d1575cd52c268a9eb585d88fcc72d7ec6241..6ec2a42c2707c0df45e86d13729ddd7088b706ad 100644
--- a/chrome/browser/android/signin/signin_manager_android.cc
+++ b/chrome/browser/android/signin/signin_manager_android.cc
@@ -228,8 +228,10 @@ void SigninManagerAndroid::LogInSignedInUser(JNIEnv* env, jobject obj) {
     // Old code path that doesn't depend on the new Account Reconcilor.
     // We manually login.
 
+    ProfileOAuth2TokenService* token_service =
+        ProfileOAuth2TokenServiceFactory::GetForProfile(profile_);
     merge_session_helper_.reset(new GoogleAutoLoginHelper(profile_, this));
-    merge_session_helper_->LogIn();
+    merge_session_helper_->LogIn(token_service->GetPrimaryAccountId());
   }
 }