Notify CloseFile from Pepper to FileSystem.

webkit/chromeos/fileapi/remote_file_system_proxy.h

Index: webkit/chromeos/fileapi/remote_file_system_proxy.h
diff --git a/webkit/chromeos/fileapi/remote_file_system_proxy.h b/webkit/chromeos/fileapi/remote_file_system_proxy.h
index b62c036ff8f8b9c0abe7e19b37b507c1cffab0b4..3a920f0ad3182f4f34063048ac45712e768d8d56 100644
--- a/webkit/chromeos/fileapi/remote_file_system_proxy.h
+++ b/webkit/chromeos/fileapi/remote_file_system_proxy.h
@@ -101,6 +101,10 @@ class RemoteFileSystemProxyInterface :
       int flags,
       base::ProcessHandle peer_handle,
       const FileSystemOperationInterface::OpenFileCallback& callback) = 0;
+
+  // Notifies that a file opened by OpenFile (at |path|) is closed.
+  virtual void NotifyCloseFile(const FileSystemURL& url) = 0;
+
   // TODO(zelidrag): More methods to follow as we implement other parts of FSO.
 
  protected: