Add test for showing confirmation dialog for unsecure signin

chrome/browser/signin/signin_promo.cc

Index: chrome/browser/signin/signin_promo.cc
diff --git a/chrome/browser/signin/signin_promo.cc b/chrome/browser/signin/signin_promo.cc
index 972178d12f835c4dca04264d6952934ad95c5943..55c30955aed64ba72229ba9842c12c17e064bc31 100644
--- a/chrome/browser/signin/signin_promo.cc
+++ b/chrome/browser/signin/signin_promo.cc
@@ -163,8 +163,15 @@ void SetUserSkippedPromo(Profile* profile) {
 }
 
 GURL GetLandingURL(const char* option, int value) {
-  const std::string& locale = g_browser_process->GetApplicationLocale();
-  std::string url = base::StringPrintf(kSignInLandingUrlPrefix, locale.c_str());
+  std::string url;
+  if (switches::IsEnableWebBasedSignin()) {
+    const std::string& locale = g_browser_process->GetApplicationLocale();
+    url = base::StringPrintf(kSignInLandingUrlPrefix, locale.c_str());
+  } else {
+    const char kGaiaExtSuccessURLPrefix[] =
+        "chrome-extension://mfffpogegjflfpflabcdkioaeobkgjik/success.html";
+    url = kGaiaExtSuccessURLPrefix;
+  }
   base::StringAppendF(&url, "?%s=%d", option, value);
   return GURL(url);
 }