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

base/win/scoped_variant_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 "base/win/scoped_variant.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 namespace win {
 
@@ skipping 126 matching lines @@
   var.Set(static_cast<int32>(123));
   EXPECT_EQ(VT_I4, var.type());
   EXPECT_EQ(123, V_I4(var.ptr()));
 
   var.Set(static_cast<int64>(123));
   EXPECT_EQ(VT_I8, var.type());
   EXPECT_EQ(123, V_I8(var.ptr()));
 
   var.Set(static_cast<uint8>(123));
   EXPECT_EQ(VT_UI1, var.type());
-  EXPECT_EQ(123, V_UI1(var.ptr()));
+  EXPECT_EQ(123u, V_UI1(var.ptr()));
 
   var.Set(static_cast<unsigned short>(123));
   EXPECT_EQ(VT_UI2, var.type());
-  EXPECT_EQ(123, V_UI2(var.ptr()));
+  EXPECT_EQ(123u, V_UI2(var.ptr()));
 
   var.Set(static_cast<uint32>(123));
   EXPECT_EQ(VT_UI4, var.type());
-  EXPECT_EQ(123, V_UI4(var.ptr()));
+  EXPECT_EQ(123u, V_UI4(var.ptr()));
 
   var.Set(static_cast<uint64>(123));
   EXPECT_EQ(VT_UI8, var.type());
-  EXPECT_EQ(123, V_UI8(var.ptr()));
+  EXPECT_EQ(123u, V_UI8(var.ptr()));
 
   var.Set(123.123f);
   EXPECT_EQ(VT_R4, var.type());
   EXPECT_EQ(123.123f, V_R4(var.ptr()));
 
   var.Set(static_cast<double>(123.123));
   EXPECT_EQ(VT_R8, var.type());
   EXPECT_EQ(123.123, V_R8(var.ptr()));
 
   var.Set(true);
@@ skipping 82 matching lines @@
 
   var.Set(sa);
   EXPECT_TRUE(ScopedVariant::IsLeakableVarType(var.type()));
   EXPECT_EQ(VT_ARRAY | VT_UI1, var.type());
   EXPECT_EQ(sa, V_ARRAY(var.ptr()));
   // The array is destroyed in the destructor of var.
 }
 
 }  // namespace win
 }  // namespace base