drive: Move temporary file removal responsiblity to FileCache

chrome/browser/chromeos/drive/file_cache_metadata.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_DRIVE_FILE_CACHE_METADATA_H_
 #define CHROME_BROWSER_CHROMEOS_DRIVE_FILE_CACHE_METADATA_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 70 matching lines @@
   // Removes entry corresponding to |resource_id| from cache map.
   void RemoveCacheEntry(const std::string& resource_id);
 
   // Gets the cache entry for file corresponding to |resource_id| and |md5|
   // and returns true if entry exists in cache map.  Otherwise, returns false.
   // |md5| can be empty if only matching |resource_id| is desired.
   bool GetCacheEntry(const std::string& resource_id,
                      const std::string& md5,
                      FileCacheEntry* entry);
 
-  // Removes temporary files (files in CACHE_TYPE_TMP) from the cache map.
-  void RemoveTemporaryFiles();
-
   // Returns an object to iterate over entries.
   scoped_ptr<Iterator> GetIterator();
 
  private:
   // Checks whether the current thread is on the right sequenced worker pool
   // with the right sequence ID. If not, DCHECK will fail.
   void AssertOnSequencedWorkerPool();
 
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
   scoped_ptr<leveldb::DB> level_db_;
 
   DISALLOW_COPY_AND_ASSIGN(FileCacheMetadata);
 };
 
 }  // namespace internal
 }  // namespace drive
 
 #endif  // CHROME_BROWSER_CHROMEOS_DRIVE_FILE_CACHE_METADATA_H_