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

net/http/http_auth_sspi_win_unittest.cc

Index: net/http/http_auth_sspi_win_unittest.cc
diff --git a/net/http/http_auth_sspi_win_unittest.cc b/net/http/http_auth_sspi_win_unittest.cc
index feebaf0cee1e0664151e9fd5c671ee4b3c51eafd..103d0c29e82c02cc094e647d10e3e83048f14f47 100644
--- a/net/http/http_auth_sspi_win_unittest.cc
+++ b/net/http/http_auth_sspi_win_unittest.cc
@@ -48,7 +48,7 @@ TEST(HttpAuthSSPITest, DetermineMaxTokenLength_Normal) {
   ULONG max_token_length = kMaxTokenLength;
   int rv = DetermineMaxTokenLength(&mock_library, L"NTLM", &max_token_length);
   EXPECT_EQ(OK, rv);
-  EXPECT_EQ(1337, max_token_length);
+  EXPECT_EQ(1337u, max_token_length);
 }
 
 TEST(HttpAuthSSPITest, DetermineMaxTokenLength_InvalidPackage) {
@@ -60,7 +60,7 @@ TEST(HttpAuthSSPITest, DetermineMaxTokenLength_InvalidPackage) {
   EXPECT_EQ(ERR_UNSUPPORTED_AUTH_SCHEME, rv);
   // |DetermineMaxTokenLength()| interface states that |max_token_length| should
   // not change on failure.
-  EXPECT_EQ(100, max_token_length);
+  EXPECT_EQ(100u, max_token_length);
 }
 
 TEST(HttpAuthSSPITest, ParseChallenge_FirstRound) {