Loosen permission on extension temp dir when a flag is used.

base/scoped_temp_dir_unittest.cc

 // Copyright (c) 2009 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 "base/file_util.h"
 #include "base/scoped_temp_dir.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 TEST(ScopedTempDir, FullPath) {
   FilePath test_path;
@@ skipping 47 matching lines @@
 
 TEST(ScopedTempDir, UniqueTempDirUnderPath) {
   // Create a path which will contain a unique temp path.
   FilePath base_path;
   file_util::CreateNewTempDirectory(FILE_PATH_LITERAL("base_dir"),
                                     &base_path);
 
   FilePath test_path;
   {
     ScopedTempDir dir;
-    EXPECT_TRUE(dir.CreateUniqueTempDirUnderPath(base_path));
+    EXPECT_TRUE(dir.CreateUniqueTempDirUnderPath(base_path, false));
     test_path = dir.path();
     EXPECT_TRUE(file_util::DirectoryExists(test_path));
     EXPECT_TRUE(base_path.IsParent(test_path));
     EXPECT_TRUE(test_path.value().find(base_path.value()) != std::string::npos);
   }
   EXPECT_FALSE(file_util::DirectoryExists(test_path));
 }