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

base/win/enum_variant_unittest.cc

Index: base/win/enum_variant_unittest.cc
diff --git a/base/win/enum_variant_unittest.cc b/base/win/enum_variant_unittest.cc
index 99645a265023ac2db889c57bda0ae7d3193470ee..288c97ea559035725fcb1f5ba62101a0902167a8 100644
--- a/base/win/enum_variant_unittest.cc
+++ b/base/win/enum_variant_unittest.cc
@@ -31,7 +31,7 @@ TEST(EnumVariantTest, EmptyEnumVariant) {
   VARIANT out_element;
   ULONG out_received = 0;
   EXPECT_EQ(S_FALSE, ev->Next(1, &out_element, &out_received));
-  EXPECT_EQ(0, out_received);
+  EXPECT_EQ(0u, out_received);
 
   EXPECT_EQ(S_FALSE, ev->Skip(1));
 
@@ -46,10 +46,10 @@ TEST(EnumVariantTest, EmptyEnumVariant) {
   EXPECT_EQ(S_OK, ev2->Reset());
 
   ULONG ev2_finalrefcount = ev2->Release();
-  EXPECT_EQ(0, ev2_finalrefcount);
+  EXPECT_EQ(0u, ev2_finalrefcount);
 
   ULONG ev_finalrefcount = ev->Release();
-  EXPECT_EQ(0, ev_finalrefcount);
+  EXPECT_EQ(0u, ev_finalrefcount);
 }
 
 TEST(EnumVariantTest, SimpleEnumVariant) {
@@ -68,12 +68,12 @@ TEST(EnumVariantTest, SimpleEnumVariant) {
   VARIANT out_element;
   ULONG out_received = 0;
   EXPECT_EQ(S_OK, ev->Next(1, &out_element, &out_received));
-  EXPECT_EQ(1, out_received);
+  EXPECT_EQ(1u, out_received);
   EXPECT_EQ(VT_I4, out_element.vt);
   EXPECT_EQ(10, out_element.lVal);
   EXPECT_EQ(S_OK, ev->Skip(1));
   EXPECT_EQ(S_OK, ev->Next(1, &out_element, &out_received));
-  EXPECT_EQ(1, out_received);
+  EXPECT_EQ(1u, out_received);
   EXPECT_EQ(VT_I4, out_element.vt);
   EXPECT_EQ(30, out_element.lVal);
   EXPECT_EQ(S_FALSE, ev->Next(1, &out_element, &out_received));
@@ -82,7 +82,7 @@ TEST(EnumVariantTest, SimpleEnumVariant) {
   VARIANT out_elements[3];
   EXPECT_EQ(S_OK, ev->Reset());
   EXPECT_EQ(S_OK, ev->Next(3, out_elements, &out_received));
-  EXPECT_EQ(3, out_received);
+  EXPECT_EQ(3u, out_received);
   EXPECT_EQ(VT_I4, out_elements[0].vt);
   EXPECT_EQ(10, out_elements[0].lVal);
   EXPECT_EQ(VT_I4, out_elements[1].vt);
@@ -98,7 +98,7 @@ TEST(EnumVariantTest, SimpleEnumVariant) {
   EXPECT_EQ(S_FALSE, ev->Next(1, &out_element, &out_received));
   EXPECT_EQ(S_OK, ev2->Reset());
   EXPECT_EQ(S_OK, ev2->Next(3, out_elements, &out_received));
-  EXPECT_EQ(3, out_received);
+  EXPECT_EQ(3u, out_received);
   EXPECT_EQ(VT_I4, out_elements[0].vt);
   EXPECT_EQ(10, out_elements[0].lVal);
   EXPECT_EQ(VT_I4, out_elements[1].vt);
@@ -108,10 +108,10 @@ TEST(EnumVariantTest, SimpleEnumVariant) {
   EXPECT_EQ(S_FALSE, ev2->Next(1, &out_element, &out_received));
 
   ULONG ev2_finalrefcount = ev2->Release();
-  EXPECT_EQ(0, ev2_finalrefcount);
+  EXPECT_EQ(0u, ev2_finalrefcount);
 
   ULONG ev_finalrefcount = ev->Release();
-  EXPECT_EQ(0, ev_finalrefcount);
+  EXPECT_EQ(0u, ev_finalrefcount);
 }
 
 }  // namespace win