Revert 90464 - Move app/win/* files to base/win/, ui/base/win and chrome/common/ directories.

base/win/iat_patch_function.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_WIN_IAT_PATCH_FUNCTION_H_
-#define BASE_WIN_IAT_PATCH_FUNCTION_H_
-#pragma once
-
-#include <windows.h>
-
-#include "base/basictypes.h"
-
-namespace base {
-namespace win {
-
-// A class that encapsulates Import Address Table patching helpers and restores
-// the original function in the destructor.
-//
-// It will intercept functions for a specific DLL imported from another DLL.
-// This is the case when, for example, we want to intercept
-// CertDuplicateCertificateContext function (exported from crypt32.dll) called
-// by wininet.dll.
-class IATPatchFunction {
- public:
-  IATPatchFunction();
-  ~IATPatchFunction();
-
-  // Intercept a function in an import table of a specific
-  // module. Save the original function and the import
-  // table address. These values will be used later
-  // during Unpatch
-  //
-  // Arguments:
-  // module                 Module to be intercepted
-  // imported_from_module   Module that exports the 'function_name'
-  // function_name          Name of the API to be intercepted
-  //
-  // Returns: Windows error code (winerror.h). NO_ERROR if successful
-  //
-  // Note: Patching a function will make the IAT patch take some "ownership" on
-  // |module|.  It will LoadLibrary(module) to keep the DLL alive until a call
-  // to Unpatch(), which will call FreeLibrary() and allow the module to be
-  // unloaded.  The idea is to help prevent the DLL from going away while a
-  // patch is still active.
-  DWORD Patch(const wchar_t* module,
-              const char* imported_from_module,
-              const char* function_name,
-              void* new_function);
-
-  // Unpatch the IAT entry using internally saved original
-  // function.
-  //
-  // Returns: Windows error code (winerror.h). NO_ERROR if successful
-  DWORD Unpatch();
-
-  bool is_patched() const {
-    return (NULL != intercept_function_);
-  }
-
- private:
-  HMODULE module_handle_;
-  void* intercept_function_;
-  void* original_function_;
-  IMAGE_THUNK_DATA* iat_thunk_;
-
-  DISALLOW_COPY_AND_ASSIGN(IATPatchFunction);
-};
-
-}  // namespace win
-}  // namespace base
-
-#endif  // BASE_WIN_IAT_PATCH_FUNCTION_H_