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..d73cb09147e013d2ccc7dc58dcea94d2bda69cd3 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);
 }