Fix base::GetNativeLibraryName() for Mac.

base/native_library_win.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/native_library.h"
 
 #include <windows.h>
 
 #include "base/files/file_util.h"
+#include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_restrictions.h"
 
 namespace base {
 
 typedef HMODULE (WINAPI* LoadLibraryFunction)(const wchar_t* file_name);
 
 namespace {
 
@@ skipping 53 matching lines @@
   FreeLibrary(library);
 }
 
 // static
 void* GetFunctionPointerFromNativeLibrary(NativeLibrary library,
                                           StringPiece name) {
   return GetProcAddress(library, name.data());
 }
 
 // static
-string16 GetNativeLibraryName(StringPiece16 name) {
-  return name.as_string() + ASCIIToUTF16(".dll");
+std::string GetNativeLibraryName(StringPiece name) {
+  DCHECK(IsStringASCII(name));
+  return name.as_string() + ".dll";
 }
 
 }  // namespace base