drive: Change FileCache::GetCacheEntry's return type to FileError

chrome/browser/chromeos/drive/file_cache.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/chromeos/drive/file_cache.h"
 
 #include <vector>
 
 #include "base/callback_helpers.h"
 #include "base/file_util.h"
@@ skipping 53 matching lines @@
 }
 
 void FileCache::AssertOnSequencedWorkerPool() {
   DCHECK(blocking_task_runner_->RunsTasksOnCurrentThread());
 }
 
 bool FileCache::IsUnderFileCacheDirectory(const base::FilePath& path) const {
   return cache_file_directory_.IsParent(path);
 }
 
-bool FileCache::GetCacheEntry(const std::string& id, FileCacheEntry* entry) {
+FileError FileCache::GetCacheEntry(const std::string& id,
+                                   FileCacheEntry* entry) {
   DCHECK(entry);
   AssertOnSequencedWorkerPool();
-  return storage_->GetCacheEntry(id, entry) == FILE_ERROR_OK;
+  return storage_->GetCacheEntry(id, entry);
 }
 
 scoped_ptr<FileCache::Iterator> FileCache::GetIterator() {
   AssertOnSequencedWorkerPool();
   return storage_->GetCacheEntryIterator();
 }
 
 bool FileCache::FreeDiskSpaceIfNeededFor(int64 num_bytes) {
   AssertOnSequencedWorkerPool();
 
@@ skipping 508 matching lines @@
     return;
 
   DCHECK_LT(0, it->second);
   --it->second;
   if (it->second == 0)
     write_opened_files_.erase(it);
 }
 
 }  // namespace internal
 }  // namespace drive