Notify CloseFile from Pepper to FileSystem.

chrome/browser/chromeos/gdata/gdata_file_system_proxy.cc

Index: chrome/browser/chromeos/gdata/gdata_file_system_proxy.cc
diff --git a/chrome/browser/chromeos/gdata/gdata_file_system_proxy.cc b/chrome/browser/chromeos/gdata/gdata_file_system_proxy.cc
index 5d72c16fe21dc73be51a4158dd68b32054ce3e0f..1e0ad968e1417ca9fda2dfd3eea2574cdfad3d88 100644
--- a/chrome/browser/chromeos/gdata/gdata_file_system_proxy.cc
+++ b/chrome/browser/chromeos/gdata/gdata_file_system_proxy.cc
@@ -389,6 +389,13 @@ void GDataFileSystemProxy::OpenFile(
                               GetDownloadDataCallback());
 }
 
+void GDataFileSystemProxy::NotifyCloseFile(const GURL& file_url) {
+  // TODO(kinaba,zelidrag): crbug.com/132236.
+  // Once OpenFile() for writing is implemented, we also need to implement the
+  // corresponding NotifyCloseFile for committing dirty cache.
+}
+
+
 void GDataFileSystemProxy::CreateSnapshotFile(
     const GURL& file_url,
     const FileSystemOperationInterface::SnapshotFileCallback& callback) {