Clean up ifdef around FilePath creation in /src/third_party

third_party/leveldatabase/env_chromium.cc

 // Copyright (c) 2011 The LevelDB Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file. See the AUTHORS file for names of contributors.
 
 #include "third_party/leveldatabase/env_chromium.h"
 
 #if defined(OS_WIN)
 #include <io.h>
 #endif
 
@@ skipping 320 matching lines @@
 
 std::string FilePathToString(const base::FilePath& file_path) {
 #if defined(OS_WIN)
   return base::UTF16ToUTF8(file_path.value());
 #else
   return file_path.value();
 #endif
 }
 
 base::FilePath ChromiumEnv::CreateFilePath(const std::string& file_path) {
-#if defined(OS_WIN)
-  return base::FilePath(base::UTF8ToUTF16(file_path));
-#else
-  return base::FilePath(file_path);
-#endif
+  return base::FilePath::FromUTF8Unsafe(file_path);
 }
 
 bool ChromiumEnv::MakeBackup(const std::string& fname) {
   base::FilePath original_table_name = CreateFilePath(fname);
   base::FilePath backup_table_name =
       original_table_name.ReplaceExtension(backup_table_extension);
   return base::CopyFile(original_table_name, backup_table_name);
 }
 
 bool ChromiumEnv::HasTableExtension(const base::FilePath& path) {
@@ skipping 496 matching lines @@
 
 Env* IDBEnv() {
   return leveldb_env::idb_env.Pointer();
 }
 
 Env* Env::Default() {
   return leveldb_env::default_env.Pointer();
 }
 
 }  // namespace leveldb