Revert of Changed api to notify when watched directory is deleted.

chrome/browser/chromeos/drive/file_change.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chromeos/drive/file_change.h"
 
 #include <sstream>
 
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
@@ skipping 97 matching lines @@
 
 void FileChange::Update(const base::FilePath file_path,
                         FileType file_type,
                         FileChange::ChangeType change) {
   Update(file_path, FileChange::Change(change, file_type));
 }
 
 void FileChange::Update(const base::FilePath file_path,
                         const ResourceEntry& entry,
                         FileChange::ChangeType change) {
-  FileType type = !entry.has_file_info()
-                      ? FILE_TYPE_UNKNOWN
-                      : entry.file_info().is_directory() ? FILE_TYPE_DIRECTORY
-                                                         : FILE_TYPE_FILE;
-
+  FileType type =
+      entry.deleted() ? FILE_TYPE_UNKNOWN : entry.file_info().is_directory()
+                                                ? FILE_TYPE_DIRECTORY
+                                                : FILE_TYPE_FILE;
   Update(file_path, type, change);
 }
 
 void FileChange::Apply(const FileChange& new_changed_files) {
   for (Map::const_iterator it = new_changed_files.map().begin();
        it != new_changed_files.map().end();
        it++) {
     Update(it->first, it->second);
   }
 }
@@ skipping 12 matching lines @@
   ss << "{ ";
   for (FileChange::Map::const_iterator it = map_.begin(); it != map_.end();
        it++) {
     ss << it->first.value() << ": " << it->second.DebugString() << ", ";
   }
   ss << "}";
   return ss.str();
 }
 
 }  // namespace drive