Move PathExists to base namespace.

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 <errno.h>
 #include <stdio.h>
 
 #include <deque>
 
 #include "base/at_exit.h"
@@ skipping 579 matching lines @@
     RecordErrorAt(kNewWritableFile);
     return MakeIOError(
         fname, strerror(saved_errno), kNewWritableFile, saved_errno);
   } else {
     *result = new ChromiumWritableFile(fname, f, this, this);
     return Status::OK();
   }
 }
 
 bool ChromiumEnv::FileExists(const std::string& fname) {
-  return ::file_util::PathExists(CreateFilePath(fname));
+  return ::base::PathExists(CreateFilePath(fname));
 }
 
 Status ChromiumEnv::GetChildren(const std::string& dir,
                                 std::vector<std::string>* result) {
   result->clear();
   base::FileEnumerator iter(
       CreateFilePath(dir), false, base::FileEnumerator::FILES);
   base::FilePath current = iter.Next();
   while (!current.empty()) {
     result->push_back(FilePathToString(current.BaseName()));
@@ skipping 47 matching lines @@
     RecordErrorAt(kGetFileSize);
   } else {
     *size = static_cast<uint64_t>(signed_size);
   }
   return s;
 }
 
 Status ChromiumEnv::RenameFile(const std::string& src, const std::string& dst) {
   Status result;
   base::FilePath src_file_path = CreateFilePath(src);
-  if (!::file_util::PathExists(src_file_path))
+  if (!::base::PathExists(src_file_path))
     return result;
   base::FilePath destination = CreateFilePath(dst);
 
   Retrier retrier(kRenameFile, this);
   base::PlatformFileError error = base::PLATFORM_FILE_OK;
   do {
     if (base::ReplaceFile(src_file_path, destination, &error))
       return result;
   } while (retrier.ShouldKeepTrying(error));
 
@@ skipping 278 matching lines @@
 Env* IDBEnv() {
   return leveldb_env::idb_env.Pointer();
 }
 
 Env* Env::Default() {
   return leveldb_env::default_env.Pointer();
 }
 
 }  // namespace leveldb