Add test for showing confirmation dialog for unsecure signin

chrome/browser/extensions/signin/gaia_auth_extension_loader.h

Index: chrome/browser/extensions/signin/gaia_auth_extension_loader.h
diff --git a/chrome/browser/extensions/signin/gaia_auth_extension_loader.h b/chrome/browser/extensions/signin/gaia_auth_extension_loader.h
index a0a8df9487787d962da1093eac0fb9389475fcef..e1f10f42dd2a8740100b0409832e54bd8451b2da 100644
--- a/chrome/browser/extensions/signin/gaia_auth_extension_loader.h
+++ b/chrome/browser/extensions/signin/gaia_auth_extension_loader.h
@@ -14,6 +14,10 @@ class BrowserContext;
 
 namespace extensions {
 
+const char kGaiaAuthExtensionId[] = "mfffpogegjflfpflabcdkioaeobkgjik";
+const char kGaiaAuthExtensionOrigin[] =
+      "chrome-extension://mfffpogegjflfpflabcdkioaeobkgjik";
+
 // Manages and registers the gaia auth extension with the extension system.
 class GaiaAuthExtensionLoader : public BrowserContextKeyedAPI {
  public: