clang/win: Let some chromium_code targets build with -Wextra.

sandbox/win/src/win_utils_unittest.cc

 // Copyright (c) 2011 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 <windows.h>
 
 #include "base/win/scoped_handle.h"
 #include "sandbox/win/src/win_utils.h"
 #include "sandbox/win/tests/common/test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 TEST(WinUtils, IsReparsePoint) {
   using sandbox::IsReparsePoint;
 
   // Create a temp file because we need write access to it.
   wchar_t temp_directory[MAX_PATH];
   wchar_t my_folder[MAX_PATH];
   ASSERT_NE(::GetTempPath(MAX_PATH, temp_directory), 0u);
   ASSERT_NE(::GetTempFileName(temp_directory, L"test", 0, my_folder), 0u);
 
   // Delete the file and create a directory instead.
   ASSERT_TRUE(::DeleteFile(my_folder));
   ASSERT_TRUE(::CreateDirectory(my_folder, NULL));
 
-  EXPECT_EQ(ERROR_NOT_A_REPARSE_POINT, IsReparsePoint(my_folder));
+  EXPECT_EQ(static_cast<DWORD>(ERROR_NOT_A_REPARSE_POINT),
+            IsReparsePoint(my_folder));
 
   base::string16 not_found = base::string16(my_folder) + L"\\foo\\bar";
-  EXPECT_EQ(ERROR_NOT_A_REPARSE_POINT, IsReparsePoint(not_found));
+  EXPECT_EQ(static_cast<DWORD>(ERROR_NOT_A_REPARSE_POINT),
+            IsReparsePoint(not_found));
 
   base::string16 new_file = base::string16(my_folder) + L"\\foo";
-  EXPECT_EQ(ERROR_NOT_A_REPARSE_POINT, IsReparsePoint(new_file));
+  EXPECT_EQ(static_cast<DWORD>(ERROR_NOT_A_REPARSE_POINT),
+            IsReparsePoint(new_file));
 
   // Replace the directory with a reparse point to %temp%.
   HANDLE dir = ::CreateFile(my_folder, FILE_ALL_ACCESS,
                             FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
                             OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
   EXPECT_NE(INVALID_HANDLE_VALUE, dir);
 
   base::string16 temp_dir_nt = base::string16(L"\\??\\") + temp_directory;
   EXPECT_TRUE(SetReparsePoint(dir, temp_dir_nt.c_str()));
 
-  EXPECT_EQ(ERROR_SUCCESS, IsReparsePoint(new_file));
+  EXPECT_EQ(static_cast<DWORD>(ERROR_SUCCESS), IsReparsePoint(new_file));
 
   EXPECT_TRUE(DeleteReparsePoint(dir));
   EXPECT_TRUE(::CloseHandle(dir));
   EXPECT_TRUE(::RemoveDirectory(my_folder));
 }
 
 TEST(WinUtils, SameObject) {
   using sandbox::SameObject;
 
   // Create a temp file because we need write access to it.
@@ skipping 46 matching lines @@
   // Written as two strings to prevent trigraph '?' '?' '/'.
   pipe_name = L"/?" L"?/pipe/mypipe";
   EXPECT_FALSE(IsPipe(pipe_name));
 
   pipe_name = L"\\XX\\pipe\\mypipe";
   EXPECT_FALSE(IsPipe(pipe_name));
 
   pipe_name = L"\\Device\\NamedPipe\\mypipe";
   EXPECT_FALSE(IsPipe(pipe_name));
 }