Show Captcha dialog.

chrome/browser/chromeos/login/google_authenticator.h

Index: chrome/browser/chromeos/login/google_authenticator.h
diff --git a/chrome/browser/chromeos/login/google_authenticator.h b/chrome/browser/chromeos/login/google_authenticator.h
index 619dd688e255d45aa923d36a5e015d0fa882cbe4..2257bca9c0ba95afecdefbae18c69d59a7310993 100644
--- a/chrome/browser/chromeos/login/google_authenticator.h
+++ b/chrome/browser/chromeos/login/google_authenticator.h
@@ -39,11 +39,15 @@ class GoogleAuthenticator : public Authenticator,
   // authentication cookies or a callback to consumer_->OnLoginFailure() with
   // an error message.  Uses |profile| when doing URL fetches.
   // Should be called on the FILE thread!
+  // Optionally could pass CAPTCHA challenge token - |login_token| and
+  // |login_captcha| string that user has entered.
   //
   // Returns true if the attempt gets sent successfully and false if not.
   bool AuthenticateToLogin(Profile* profile,
                            const std::string& username,
-                           const std::string& password);
+                           const std::string& password,
+                           const std::string& login_token,
+                           const std::string& login_captcha);
 
   // Given a |username| and |password|, this method attempts to
   // authenticate to the cached credentials. This will never contact
@@ -149,6 +153,9 @@ class GoogleAuthenticator : public Authenticator,
   // The format of said POST body.
   static const char kFormat[];
 
+  // The format of said POST body when CAPTCHA token & answer are specified.
+  static const char kFormatCaptcha[];
+
   // Magic string indicating that, while a second factor is still
   // needed to complete authentication, the user provided the right password.
   static const char kSecondFactor[];