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

base/win/enum_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/enum_variant.h"
 
 #include "base/win/scoped_com_initializer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
@@ skipping 13 matching lines @@
   IEnumVARIANT* ienumvariant;
   EXPECT_TRUE(SUCCEEDED(
       ev->QueryInterface(IID_IEnumVARIANT,
                          reinterpret_cast<void**>(&ienumvariant))));
   EXPECT_EQ(ev, ienumvariant);
   ienumvariant->Release();
 
   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));
 
   EXPECT_EQ(S_OK, ev->Reset());
 
   IEnumVARIANT* ev2 = NULL;
   EXPECT_EQ(S_OK, ev->Clone(&ev2));
 
   EXPECT_NE(static_cast<IEnumVARIANT*>(NULL), ev2);
   EXPECT_NE(ev, ev2);
   EXPECT_EQ(S_FALSE, ev2->Skip(1));
   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) {
   ScopedCOMInitializer com_initializer;
 
   EnumVariant* ev = new EnumVariant(3);
   ev->AddRef();
   ev->ItemAt(0)->vt = VT_I4;
   ev->ItemAt(0)->lVal = 10;
   ev->ItemAt(1)->vt = VT_I4;
   ev->ItemAt(1)->lVal = 20;
   ev->ItemAt(2)->vt = VT_I4;
   ev->ItemAt(2)->lVal = 30;
 
   // Get elements one at a time.
   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));
 
   // Reset and get all elements at once.
   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);
   EXPECT_EQ(20, out_elements[1].lVal);
   EXPECT_EQ(VT_I4, out_elements[2].vt);
   EXPECT_EQ(30, out_elements[2].lVal);
   EXPECT_EQ(S_FALSE, ev->Next(1, &out_element, &out_received));
 
   // Clone it.
   IEnumVARIANT* ev2 = NULL;
   EXPECT_EQ(S_OK, ev->Clone(&ev2));
   EXPECT_TRUE(ev2 != NULL);
   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);
   EXPECT_EQ(20, out_elements[1].lVal);
   EXPECT_EQ(VT_I4, out_elements[2].vt);
   EXPECT_EQ(30, out_elements[2].lVal);
   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
 }  // namespace base