Log ChromeToMobile search and auth errors to UMA and INFO.

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 59 matching lines @@
     // The password is valid but we need two factor to get a token.
     TWO_FACTOR = 8,
 
     // The requestor of the authentication step cancelled the request
     // prior to completion.
     REQUEST_CANCELED = 9,
 
     // The user has provided a HOSTED account, when this service requires
     // a GOOGLE account.
     HOSTED_NOT_ALLOWED = 10,
+
+    // The number of known error states.
+    NUM_STATES = 11,
   };
 
   // Additional data for CAPTCHA_REQUIRED errors.
   struct Captcha {
     Captcha();
     Captcha(const std::string& token,
             const GURL& audio,
             const GURL& img,
             const GURL& unlock,
             int width,
@@ skipping 110 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_