Changed api to notify when watched directory is deleted.

chrome/browser/chromeos/drive/file_change.cc

Index: chrome/browser/chromeos/drive/file_change.cc
diff --git a/chrome/browser/chromeos/drive/file_change.cc b/chrome/browser/chromeos/drive/file_change.cc
index 0649d377e0d4f635d545162f308bc97fa6db75c5..10da6bbca9c63a63a52c0360389ab4c1b3788094 100644
--- a/chrome/browser/chromeos/drive/file_change.cc
+++ b/chrome/browser/chromeos/drive/file_change.cc
@@ -115,10 +115,11 @@ void FileChange::Update(const base::FilePath file_path,
 void FileChange::Update(const base::FilePath file_path,
                         const ResourceEntry& entry,
                         FileChange::ChangeType change) {
-  FileType type =
-      entry.deleted() ? FILE_TYPE_UNKNOWN : entry.file_info().is_directory()
-                                                ? FILE_TYPE_DIRECTORY
-                                                : FILE_TYPE_FILE;
+  FileType type = !entry.has_file_info() ? FILE_TYPE_UNKNOWN
+                                         : entry.file_info().is_directory()
+                                            ? FILE_TYPE_DIRECTORY
+                                            : FILE_TYPE_FILE;
+
   Update(file_path, type, change);
 }