Fix base::GetNativeLibraryName() for Mac.

base/native_library.h

 // 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.
 
 #ifndef BASE_NATIVE_LIBRARY_H_
 #define BASE_NATIVE_LIBRARY_H_
 
 // This file defines a cross-platform "NativeLibrary" type which represents
 // a loadable module.
 
 #include <string>
 
 #include "base/base_export.h"
-#include "base/strings/string16.h"
 #include "base/strings/string_piece.h"
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif defined(OS_MACOSX)
 #import <CoreFoundation/CoreFoundation.h>
 #endif  // OS_*
 
 namespace base {
@@ skipping 60 matching lines @@
 // Unloads a native library.
 BASE_EXPORT void UnloadNativeLibrary(NativeLibrary library);
 
 // Gets a function pointer from a native library.
 BASE_EXPORT void* GetFunctionPointerFromNativeLibrary(NativeLibrary library,
                                                       StringPiece name);
 
 // Returns the full platform specific name for a native library.
 // For example:
 // "mylib" returns "mylib.dll" on Windows, "libmylib.so" on Linux,
-// "mylib.dylib" on Mac.
-BASE_EXPORT string16 GetNativeLibraryName(StringPiece16 name);
+// "libmylib.dylib" on Mac.
+BASE_EXPORT std::string GetNativeLibraryName(StringPiece name);
 
 }  // namespace base
 
 #endif  // BASE_NATIVE_LIBRARY_H_