Fix an uninitialized field in the fileSystem.retainEntry implementation.

chrome/browser/extensions/api/file_system/file_system_apitest.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 "apps/saved_files_service.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ skipping 575 matching lines @@
   ASSERT_FALSE(test_file.empty());
   FileSystemChooseEntryFunction::SkipPickerAndAlwaysSelectPathForTest(
       &test_file);
   ASSERT_TRUE(RunPlatformAppTest(
       "api_test/file_system/retain_entry")) << message_;
   std::vector<apps::SavedFileEntry> file_entries = apps::SavedFilesService::Get(
       profile())->GetAllFileEntries(GetSingleLoadedExtension()->id());
   ASSERT_EQ(1u, file_entries.size());
   EXPECT_EQ(test_file, file_entries[0].path);
   EXPECT_EQ(1, file_entries[0].sequence_number);
+  EXPECT_FALSE(file_entries[0].is_directory);
 }
 
 IN_PROC_BROWSER_TEST_F(FileSystemApiTest, FileSystemApiRetainDirectoryEntry) {
   base::FilePath test_file = TempFilePath("open_existing.txt", true);
   ASSERT_FALSE(test_file.empty());
   base::FilePath test_directory = test_file.DirName();
   FileSystemChooseEntryFunction::SkipPickerAndAlwaysSelectPathForTest(
       &test_directory);
   ASSERT_TRUE(RunPlatformAppTest("api_test/file_system/retain_directory"))
       << message_;
@@ skipping 28 matching lines @@
   AppInstallObserver observer(
       base::Bind(AddSavedEntry,
                  test_directory,
                  true,
                  apps::SavedFilesService::Get(profile())));
   ASSERT_TRUE(RunPlatformAppTest("api_test/file_system/restore_directory"))
       << message_;
 }
 
 }  // namespace extensions