drive: Stop using FileCacheEntry related methods in FileCache

chrome/browser/chromeos/drive/resource_metadata_storage.h

Index: chrome/browser/chromeos/drive/resource_metadata_storage.h
diff --git a/chrome/browser/chromeos/drive/resource_metadata_storage.h b/chrome/browser/chromeos/drive/resource_metadata_storage.h
index 44392b3cfa2cf0b579ae9d329593f79ebd90e09b..7d38f70c18e49dbd360becb72ccf4b5d22c1c282 100644
--- a/chrome/browser/chromeos/drive/resource_metadata_storage.h
+++ b/chrome/browser/chromeos/drive/resource_metadata_storage.h
@@ -166,18 +166,9 @@ class ResourceMetadataStorage {
   FileError GetChildren(const std::string& parent_id,
                         std::vector<std::string>* children);
 
-  // Puts the cache entry to this storage.
-  FileError PutCacheEntry(const std::string& id, const FileCacheEntry& entry);
-
   // Gets a cache entry stored in this storage.
   FileError GetCacheEntry(const std::string& id, FileCacheEntry* out_entry);
 
-  // Removes a cache entry from this storage.
-  FileError RemoveCacheEntry(const std::string& id);
-
-  // Returns an object to iterate over cache entries stored in this storage.
-  scoped_ptr<CacheEntryIterator> GetCacheEntryIterator();
-
   // Returns the local ID associated with the given resource ID.
   FileError GetIdByResourceId(const std::string& resource_id,
                               std::string* out_id);