Use a direct include of utf_string_conversions.h in content/.

content/common/mac/font_descriptor_unittest.mm

 // 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 "content/common/mac/font_descriptor.h"
 
 #include <Cocoa/Cocoa.h>
 
 #include "base/logging.h"
-#include "base/utf_string_conversions.h"
 #include "base/strings/sys_string_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 #include "testing/gtest_mac.h"
 #include "testing/platform_test.h"
 
 namespace {
 
 class FontSerializationTest : public PlatformTest {};
 
 const std::string kCourierFontName("Courier");
 
 // Compare 2 fonts, make sure they point at the same font definition and have
@@ skipping 83 matching lines @@
 TEST_F(FontSerializationTest, BadParameters) {
   EXPECT_NSNE(MakeNSFont(kCourierFontName, 12), nil);
   EXPECT_NSNE(MakeNSFont(kCourierFontName, std::numeric_limits<float>::min()),
               nil);
   EXPECT_NSNE(MakeNSFont(kCourierFontName, 0), nil);
   EXPECT_NSNE(MakeNSFont(kCourierFontName, std::numeric_limits<float>::max()),
               nil);
 }
 
 }  // namespace