Added WARN_UNUSED_RESULT to ScopedTempDir methods.

webkit/tools/test_shell/simple_database_system.cc

 // Copyright (c) 2010 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 "webkit/tools/test_shell/simple_database_system.h"
 
 #include "base/auto_reset.h"
 #include "base/file_util.h"
 #include "base/message_loop.h"
 #include "base/threading/platform_thread.h"
@@ skipping 10 matching lines @@
 
 SimpleDatabaseSystem* SimpleDatabaseSystem::instance_ = NULL;
 
 SimpleDatabaseSystem* SimpleDatabaseSystem::GetInstance() {
   DCHECK(instance_);
   return instance_;
 }
 
 SimpleDatabaseSystem::SimpleDatabaseSystem()
     : waiting_for_dbs_to_close_(false) {
-  temp_dir_.CreateUniqueTempDir();
+  CHECK(temp_dir_.CreateUniqueTempDir());
   db_tracker_ = new DatabaseTracker(temp_dir_.path(), false);
   db_tracker_->AddObserver(this);
   DCHECK(!instance_);
   instance_ = this;
 }
 
 SimpleDatabaseSystem::~SimpleDatabaseSystem() {
   db_tracker_->RemoveObserver(this);
   instance_ = NULL;
 }
@@ skipping 142 matching lines @@
 
 FilePath SimpleDatabaseSystem::GetFullFilePathForVfsFile(
     const string16& vfs_file_name) {
   if (vfs_file_name.empty())  // temp file, used for vacuuming
     return FilePath();
 
   AutoLock file_names_auto_lock(file_names_lock_);
   DCHECK(file_names_.find(vfs_file_name) != file_names_.end());
   return file_names_[vfs_file_name];
 }