Revert 239921 "Revert 239759 "The comment in base64.h implies th..."

trunk/src/net/base/keygen_handler_win.cc

 // Copyright (c) 2011 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.
 
 #include "net/base/keygen_handler.h"
 
 #include <windows.h>
 #include <wincrypt.h>
 #pragma comment(lib, "crypt32.lib")
 #include <rpc.h>
@@ skipping 193 matching lines @@
 
     std::string spkac;
     if (!GetSignedPublicKeyAndChallenge(key_container.provider_, challenge_,
                                         &spkac)) {
       LOG(ERROR) << "Keygen failed: Couldn't generate the signed public key "
                     "and challenge";
       return std::string();
     }
 
     std::string result;
-    if (!base::Base64Encode(spkac, &result)) {
-      LOG(ERROR) << "Keygen failed: Couldn't convert signed key into base64";
-      return std::string();
-    }
+    base::Base64Encode(spkac, &result);
 
     VLOG(1) << "Keygen succeeded";
     return result;
   }
 }
 
 }  // namespace net