Add test for showing confirmation dialog for unsecure signin

chrome/browser/extensions/signin/gaia_auth_extension_loader.cc

Index: chrome/browser/extensions/signin/gaia_auth_extension_loader.cc
diff --git a/chrome/browser/extensions/signin/gaia_auth_extension_loader.cc b/chrome/browser/extensions/signin/gaia_auth_extension_loader.cc
index eb1d956268acd948be647599530b35db2a11adc7..6f14e6e9a160668b7cac3d120b7fd406727378aa 100644
--- a/chrome/browser/extensions/signin/gaia_auth_extension_loader.cc
+++ b/chrome/browser/extensions/signin/gaia_auth_extension_loader.cc
@@ -76,9 +76,7 @@ void UnloadGaiaAuthExtension(BrowserContext* context) {
         base::Time::Max(),
         base::Bind(&base::DoNothing));
   }
-
-  const char kGaiaAuthId[] = "mfffpogegjflfpflabcdkioaeobkgjik";
-  GetComponentLoader(context)->Remove(kGaiaAuthId);
+  GetComponentLoader(context)->Remove(extensions::kGaiaAuthExtensionId);
 }
 
 }  // namespace