Remove support for ClientOAuth from GaiaAuthFetcher.

google_apis/gaia/google_service_auth_error.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A GoogleServiceAuthError is immutable, plain old data representing an
 // error from an attempt to authenticate with a Google service.
 // It could be from Google Accounts itself, or any service using Google
 // Accounts (e.g expired credentials).  It may contain additional data such as
 // captcha or OTP challenges.
 
@@ skipping 127 matching lines @@
 
   // Construct a CAPTCHA_REQUIRED error with CAPTCHA challenge data from the
   // the ClientLogin endpoint.
   // TODO(rogerta): once ClientLogin is no longer used, may be able to get
   // rid of this function.
   static GoogleServiceAuthError FromClientLoginCaptchaChallenge(
       const std::string& captcha_token,
       const GURL& captcha_image_url,
       const GURL& captcha_unlock_url);
 
-  // Construct a CAPTCHA_REQUIRED error with CAPTCHA challenge data from the
-  // ClientOAuth endpoint.
-  static GoogleServiceAuthError FromCaptchaChallenge(
-      const std::string& captcha_token,
-      const GURL& captcha_audio_url,
-      const GURL& captcha_image_url,
-      int image_width,
-      int image_height);
-
-  // Construct a TWO_FACTOR error with second-factor challenge data.
-  static GoogleServiceAuthError FromSecondFactorChallenge(
-      const std::string& captcha_token,
-      const std::string& prompt_text,
-      const std::string& alternate_text,
-      int field_length);
-
-  // Construct an INVALID_GAIA_CREDENTIALS error from a ClientOAuth response.
-  // |data| is the JSON response from the server explaning the error.
-  static GoogleServiceAuthError FromClientOAuthError(const std::string& data);
-
   // Provided for convenience for clients needing to reset an instance to NONE.
   // (avoids err_ = GoogleServiceAuthError(GoogleServiceAuthError::NONE), due
   // to explicit class and State enum relation. Note: shouldn't be inlined!
   static GoogleServiceAuthError AuthErrorNone();
 
   // The error information.
   State state() const;
   const Captcha& captcha() const;
   const SecondFactor& second_factor() const;
   int network_error() const;
@@ skipping 25 matching lines @@
                          int field_length);
 
   State state_;
   Captcha captcha_;
   SecondFactor second_factor_;
   int network_error_;
   std::string error_message_;
 };
 
 #endif  // GOOGLE_APIS_GAIA_GOOGLE_SERVICE_AUTH_ERROR_H_