Add browser test for new user CrOS login flow

chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
index 8a02b6179a80348281d1b73ca85f41c1a14a9b87..dd859dbbcd08a04bdb4b400d1576f12aa1a09c6d 100644
--- a/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/signin_screen_handler.h
@@ -185,6 +185,10 @@ class SigninScreenHandler
                            ConnectionType connection_type,
                            const std::string& reason) OVERRIDE;
 
+  // Use http:// for gaia url because our test http server does not
+  // supporl ssl.
+  static void UseHttpForGaiaForTesting() { http_for_gaia_ = true; }
+
  private:
   enum UIState {
     UI_STATE_UNKNOWN = 0,
@@ -249,7 +253,6 @@ class SigninScreenHandler
   virtual void ShowErrorScreen(LoginDisplay::SigninError error_id) OVERRIDE;
   virtual void ShowSigninScreenForCreds(const std::string& username,
                                         const std::string& password) OVERRIDE;
-
   // BrowsingDataRemover::Observer overrides.
   virtual void OnBrowsingDataRemoverDone() OVERRIDE;
 
@@ -435,6 +438,10 @@ class SigninScreenHandler
   // NOTIFICATION_AUTH_CANCELLED.
   bool has_pending_auth_ui_;
 
+  // Testing flag, true when we want to use http:// for gaia
+  // url. Because our test http server does not supporl ssl.
+  static bool http_for_gaia_;
+
   DISALLOW_COPY_AND_ASSIGN(SigninScreenHandler);
 };