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

sandbox/win/src/win_utils_unittest.cc

Index: sandbox/win/src/win_utils_unittest.cc
diff --git a/sandbox/win/src/win_utils_unittest.cc b/sandbox/win/src/win_utils_unittest.cc
index 15da51b29cbfa9e54306037e2346d0f6df3799d5..fb72eb33859dc3f57d4b96834060c88da452a6c6 100644
--- a/sandbox/win/src/win_utils_unittest.cc
+++ b/sandbox/win/src/win_utils_unittest.cc
@@ -22,13 +22,16 @@ TEST(WinUtils, IsReparsePoint) {
   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,
@@ -39,7 +42,7 @@ TEST(WinUtils, IsReparsePoint) {
   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));