Make base::Base64Encode() return void

chrome/browser/metrics/variations/variations_service_unittest.cc

 // 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.
 
 #include "chrome/browser/metrics/variations/variations_service.h"
 
 #include <vector>
 
 #include "base/base64.h"
 #include "base/prefs/testing_pref_service.h"
@@ skipping 73 matching lines @@
 }
 
 // Serializes |seed| to base64-encoded protobuf binary format.
 std::string SerializeSeedBase64(const VariationsSeed& seed, std::string* hash) {
   std::string serialized_seed = SerializeSeed(seed);
   if (hash != NULL) {
     std::string sha1 = base::SHA1HashString(serialized_seed);
     *hash = base::HexEncode(sha1.data(), sha1.size());
   }
   std::string base64_serialized_seed;
-  EXPECT_TRUE(base::Base64Encode(serialized_seed, &base64_serialized_seed));
+  base::Base64Encode(serialized_seed, &base64_serialized_seed);
   return base64_serialized_seed;
 }
 
 // Simulates a variations service response by setting a date header and the
 // specified HTTP |response_code| on |fetcher|.
 void SimulateServerResponse(int response_code, net::TestURLFetcher* fetcher) {
   ASSERT_TRUE(fetcher);
   scoped_refptr<net::HttpResponseHeaders> headers(
       new net::HttpResponseHeaders("date:Wed, 13 Feb 2013 00:25:24 GMT\0\0"));
   fetcher->set_response_headers(headers);
@@ skipping 292 matching lines @@
       prefs.FindPreference(prefs::kVariationsSeedDate)->IsDefaultValue());
 
   net::TestURLFetcher* fetcher = factory.GetFetcherByID(0);
   SimulateServerResponse(net::HTTP_NOT_MODIFIED, fetcher);
   variations_service.OnURLFetchComplete(fetcher);
   EXPECT_FALSE(
       prefs.FindPreference(prefs::kVariationsSeedDate)->IsDefaultValue());
 }
 
 }  // namespace chrome_variations