Clean up some nits in base::NativeLibrary.

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/stringprintf.h"
@@ skipping 44 matching lines @@
 
 // static
 NativeLibrary LoadNativeLibrary(const FilePath& library_path,
                                 NativeLibraryLoadError* error) {
   return LoadNativeLibraryHelper(library_path, LoadLibraryW, error);
 }
 
 NativeLibrary LoadNativeLibraryDynamically(const FilePath& library_path) {
   typedef HMODULE (WINAPI* LoadLibraryFunction)(const wchar_t* file_name);
 
-  LoadLibraryFunction load_library;
-  load_library = reinterpret_cast<LoadLibraryFunction>(
+  LoadLibraryFunction load_library = reinterpret_cast<LoadLibraryFunction>(
       GetProcAddress(GetModuleHandle(L"kernel32.dll"), "LoadLibraryW"));
 
   return LoadNativeLibraryHelper(library_path, load_library, NULL);
 }
 
 // static
 void UnloadNativeLibrary(NativeLibrary library) {
   FreeLibrary(library);
 }
 
 // static
 void* GetFunctionPointerFromNativeLibrary(NativeLibrary library,
-                                          const char* name) {
-  return GetProcAddress(library, name);
+                                          StringPiece name) {
+  return GetProcAddress(library, name.data());
 }
 
 // static
-string16 GetNativeLibraryName(const string16& name) {
-  return name + ASCIIToUTF16(".dll");
+string16 GetNativeLibraryName(StringPiece16 name) {
+  return name.as_string() + ASCIIToUTF16(".dll");
 }
 
 }  // namespace base