IndexedDB: Enable leveldb log reuse on Chrome OS.

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_POSIX)
 #include <dirent.h>
 #include <sys/types.h>
 #endif
@@ skipping 878 matching lines @@
                        kNewWritableFile, f->error_details());
   } else {
     *result =
         new ChromiumWritableFile(fname, f.release(), this, this, make_backup_);
     return Status::OK();
   }
 }
 
 Status ChromiumEnv::NewAppendableFile(const std::string& fname,
                                       leveldb::WritableFile** result) {
-#if defined(OS_CHROMEOS)
-  // Disabled until crbug.com/460568 is fixed. Technically this method shouldn't
-  // be called if reuse_logs is false, but a leveldb bug (fixed, but not yet in
-  // Chrome) still calls this function. Using default leveldb Env implementation
-  // to workaround this bug.
-  return Env::NewAppendableFile(fname, result);
-#endif
-
   *result = NULL;
   FilePath path = FilePath::FromUTF8Unsafe(fname);
   scoped_ptr<base::File> f(new base::File(
       path, base::File::FLAG_OPEN_ALWAYS | base::File::FLAG_APPEND));
   if (!f->IsValid()) {
     RecordErrorAt(kNewAppendableFile);
     return MakeIOError(fname, "Unable to create appendable file",
                        kNewAppendableFile, f->error_details());
   }
   *result =
@@ skipping 187 matching lines @@
 
 Env* IDBEnv() {
   return leveldb_env::idb_env.Pointer();
 }
 
 Env* Env::Default() {
   return leveldb_env::default_env.Pointer();
 }
 
 }  // namespace leveldb