Deleted OS_WIN and all Windows specific files from base.

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"
-#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 {
-
-NativeLibrary LoadNativeLibraryHelper(const FilePath& library_path,
-                                      LoadLibraryFunction load_library_api,
-                                      NativeLibraryLoadError* error) {
-  // LoadLibrary() opens the file off disk.
-  ThreadRestrictions::AssertIOAllowed();
-
-  // Switch the current directory to the library directory as the library
-  // may have dependencies on DLLs in this directory.
-  bool restore_directory = false;
-  FilePath current_directory;
-  if (GetCurrentDirectory(&current_directory)) {
-    FilePath plugin_path = library_path.DirName();
-    if (!plugin_path.empty()) {
-      SetCurrentDirectory(plugin_path);
-      restore_directory = true;
-    }
-  }
-
-  HMODULE module = (*load_library_api)(library_path.value().c_str());
-  if (!module && error) {
-    // GetLastError() needs to be called immediately after |load_library_api|.
-    error->code = GetLastError();
-  }
-
-  if (restore_directory)
-    SetCurrentDirectory(current_directory);
-
-  return module;
-}
-
-}  // namespace
-
-std::string NativeLibraryLoadError::ToString() const {
-  return StringPrintf("%u", code);
-}
-
-// 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>(
-      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);
-}
-
-// static
-string16 GetNativeLibraryName(const string16& name) {
-  return name + ASCIIToUTF16(".dll");
-}
-
-}  // namespace base