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

content/common/font_warmup_win_unittest.cc

 // Copyright 2015 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 "content/common/font_warmup_win.h"
 
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/logging.h"
@@ skipping 238 matching lines @@
 
 TEST(GDIFontEmulationTest, CreateDeleteDCSuccess) {
   if (base::win::GetVersion() < base::win::VERSION_WIN8)
     return;
   TestSkFontMgr fontmgr;
   scoped_ptr<GdiFontPatchData> patch_data(SetupTest());
   EXPECT_FALSE(!patch_data);
 
   HDC hdc = CreateCompatibleDC(0);
   EXPECT_NE(hdc, nullptr);
-  EXPECT_EQ(GetEmulatedGdiHandleCountForTesting(), 1);
+  EXPECT_EQ(1u, GetEmulatedGdiHandleCountForTesting());
   EXPECT_TRUE(DeleteDC(hdc));
-  EXPECT_EQ(GetEmulatedGdiHandleCountForTesting(), 0);
+  EXPECT_EQ(0u, GetEmulatedGdiHandleCountForTesting());
 }
 
 TEST(GDIFontEmulationTest, CreateUniqueDCSuccess) {
   if (base::win::GetVersion() < base::win::VERSION_WIN8)
     return;
   TestSkFontMgr fontmgr;
   scoped_ptr<GdiFontPatchData> patch_data(SetupTest());
   EXPECT_NE(patch_data, nullptr);
 
   HDC hdc1 = CreateCompatibleDC(0);
   EXPECT_NE(hdc1, nullptr);
   HDC hdc2 = CreateCompatibleDC(0);
   EXPECT_NE(hdc2, nullptr);
   EXPECT_NE(hdc1, hdc2);
   EXPECT_TRUE(DeleteDC(hdc2));
-  EXPECT_EQ(GetEmulatedGdiHandleCountForTesting(), 1);
+  EXPECT_EQ(1u, GetEmulatedGdiHandleCountForTesting());
   EXPECT_TRUE(DeleteDC(hdc1));
-  EXPECT_EQ(GetEmulatedGdiHandleCountForTesting(), 0);
+  EXPECT_EQ(0u, GetEmulatedGdiHandleCountForTesting());
 }
 
 TEST(GDIFontEmulationTest, CreateFontSuccess) {
   if (base::win::GetVersion() < base::win::VERSION_WIN8)
     return;
   TestSkFontMgr fontmgr;
   scoped_ptr<GdiFontPatchData> patch_data(SetupTest());
   EXPECT_NE(patch_data, nullptr);
   LOGFONTW logfont = {0};
   InitLogFont(&logfont, kTestFontFamilyW);
   HFONT font = CreateFontIndirectW(&logfont);
   EXPECT_NE(font, nullptr);
   EXPECT_TRUE(DeleteObject(font));
-  EXPECT_EQ(GetEmulatedGdiHandleCountForTesting(), 0);
+  EXPECT_EQ(0u, GetEmulatedGdiHandleCountForTesting());
 }
 
 TEST(GDIFontEmulationTest, CreateFontFailure) {
   if (base::win::GetVersion() < base::win::VERSION_WIN8)
     return;
   TestSkFontMgr fontmgr;
   scoped_ptr<GdiFontPatchData> patch_data(SetupTest());
   EXPECT_NE(patch_data, nullptr);
   LOGFONTW logfont = {0};
   InitLogFont(&logfont, kTestFontFamilyInvalid);
@@ skipping 119 matching lines @@
   DWORD data_size = static_cast<DWORD>(strlen(kTestFontData));
   std::vector<char> data(data_size);
   DWORD size = GetFontData(hdc, kTestFontTableTag, 0, &data[0], data.size());
   EXPECT_EQ(size, data_size);
   EXPECT_EQ(memcmp(&data[0], kTestFontData, data.size()), 0);
   EXPECT_TRUE(DeleteObject(font));
   EXPECT_TRUE(DeleteDC(hdc));
 }
 
 }  // namespace content