Files.app: Provide detailed change information on onDirectoryChanged event

chrome/browser/chromeos/drive/file_system/download_operation.cc

Index: chrome/browser/chromeos/drive/file_system/download_operation.cc
diff --git a/chrome/browser/chromeos/drive/file_system/download_operation.cc b/chrome/browser/chromeos/drive/file_system/download_operation.cc
index ba89f002951724c52ccf689267dfc2c059b97f88..c52102de883df39ffdb0d7320c84efedaa80ea5c 100644
--- a/chrome/browser/chromeos/drive/file_system/download_operation.cc
+++ b/chrome/browser/chromeos/drive/file_system/download_operation.cc
@@ -12,6 +12,7 @@
 #include "base/task_runner_util.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/file_cache.h"
+#include "chrome/browser/chromeos/drive/file_change.h"
 #include "chrome/browser/chromeos/drive/file_errors.h"
 #include "chrome/browser/chromeos/drive/file_system/operation_observer.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
@@ -528,8 +529,12 @@ void DownloadOperation::EnsureFileDownloadedAfterUpdateLocalState(
     return;
   }
 
+  FileChange changed_files;
+  changed_files.Update(file_path,
+                       FileChange::FILE_TYPE_FILE,
+                       FileChange::ADD_OR_UPDATE);
   // Storing to cache changes the "offline available" status, hence notify.
-  observer_->OnDirectoryChangedByOperation(file_path.DirName());
+  observer_->OnDirectoryChangedByOperation(changed_files);
   params->OnDownloadCompleted(*cache_file_path, entry_after_update.Pass());
 }