Move sys_string_conversions to base/strings.

base/sys_string_conversions_mac_unittest.mm

Index: base/sys_string_conversions_mac_unittest.mm
diff --git a/base/sys_string_conversions_mac_unittest.mm b/base/sys_string_conversions_mac_unittest.mm
deleted file mode 100644
index 8b0ac88acba589fa55c5646be68d05e24d33b389..0000000000000000000000000000000000000000
--- a/base/sys_string_conversions_mac_unittest.mm
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright (c) 2012 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.
-
-#import <Foundation/Foundation.h>
-
-#include "base/string16.h"
-#include "base/sys_string_conversions.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-TEST(SysStrings, ConversionsFromNSString) {
-  EXPECT_STREQ("Hello, world!",
-               base::SysNSStringToUTF8(@"Hello, world!").c_str());
-
-  // Conversions should be able to handle a NULL value without crashing.
-  EXPECT_STREQ("", base::SysNSStringToUTF8(nil).c_str());
-  EXPECT_EQ(string16(), base::SysNSStringToUTF16(nil));
-}