Make base::Base64Encode() return void

chrome/test/chromedriver/chrome_launcher_unittest.cc

 // Copyright (c) 2013 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 "base/base64.h"
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 22 matching lines @@
                             std::vector<std::string>* extensions) {
   base::FilePath source_root;
   PathService::Get(base::DIR_SOURCE_ROOT, &source_root);
   base::FilePath crx_file_path = source_root.AppendASCII(
       "chrome/test/data/chromedriver/" + relative_path);
   std::string crx_contents;
   if (!base::ReadFileToString(crx_file_path, &crx_contents))
     return false;
 
   std::string crx_encoded;
-  if (!base::Base64Encode(crx_contents, &crx_encoded))
-    return false;
+  base::Base64Encode(crx_contents, &crx_encoded);
   extensions->push_back(crx_encoded);
   return true;
 }
 
 TEST(ProcessExtensions, SingleExtensionWithBgPage) {
   std::vector<std::string> extensions;
   ASSERT_TRUE(AddExtensionForInstall("ext_slow_loader.crx", &extensions));
 
   base::ScopedTempDir extension_dir;
   ASSERT_TRUE(extension_dir.CreateUniqueTempDir());
@@ skipping 108 matching lines @@
   base::FilePath local_state_file = temp_dir.path().AppendASCII("Local State");
   std::string local_state_str;
   ASSERT_TRUE(base::ReadFileToString(local_state_file, &local_state_str));
   scoped_ptr<base::Value> local_state_value(
       base::JSONReader::Read(local_state_str));
   const base::DictionaryValue* local_state_dict = NULL;
   ASSERT_TRUE(local_state_value->GetAsDictionary(&local_state_dict));
   AssertEQ(*local_state_dict, "myLocalKey", "ok");
   AssertEQ(*local_state_dict, "local.state.sub", "2");
 }