Added WARN_UNUSED_RESULT to ScopedTempDir methods.

webkit/fileapi/file_system_operation_unittest.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/fileapi/file_system_operation.h"
 
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/scoped_ptr.h"
 #include "base/scoped_temp_dir.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/fileapi/file_system_callback_dispatcher.h"
 #include "webkit/fileapi/file_system_operation.h"
 
 namespace fileapi {
 
 const int kFileOperationStatusNotSet = 1;
 const int kFileOperationSucceeded = 0;
 
 static bool FileExists(FilePath path) {
   return file_util::PathExists(path) && !file_util::DirectoryExists(path);
 }
 
 class MockDispatcher;
 
 class FileSystemOperationTest : public testing::Test {
  public:
   FileSystemOperationTest()
       : status_(kFileOperationStatusNotSet) {
-    base_.CreateUniqueTempDir();
-    EXPECT_TRUE(base_.IsValid());
+    EXPECT_TRUE(base_.CreateUniqueTempDir());
   }
 
   FileSystemOperation* operation();
 
   void set_status(int status) { status_ = status; }
   int status() const { return status_; }
   void set_info(const base::PlatformFileInfo& info) { info_ = info; }
   const base::PlatformFileInfo& info() const { return info_; }
   void set_entries(const std::vector<base::FileUtilProxy::Entry>& entries) {
     entries_ = entries;
@@ skipping 679 matching lines @@
 
   // Check that its length is now 3 and that it contains only bits of test data.
   EXPECT_TRUE(file_util::GetFileInfo(file, &info));
   EXPECT_EQ(length, info.size);
   EXPECT_EQ(length, file_util::ReadFile(file, data, length));
   for (int i = 0; i < length; ++i)
     EXPECT_EQ(test_data[i], data[i]);
 }
 
 }  // namespace fileapi