Fix incorrect guards in base/.

base/pe_image.h

 // Copyright (c) 2006-2008 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.
 
 // This file was adapted from GreenBorder's Code.
 // To understand what this class is about (for other than well known functions
 // as GetProcAddress), a good starting point is "An In-Depth Look into the
 // Win32 Portable Executable File Format" by Matt Pietrek:
 // http://msdn.microsoft.com/msdnmag/issues/02/02/PE/default.aspx
 
-#ifndef BASE_SRC_PE_IMAGE_H__
-#define BASE_SRC_PE_IMAGE_H__
+#ifndef BASE_PE_IMAGE_H_
+#define BASE_PE_IMAGE_H_
 
 #include <windows.h>
 #include <DelayIMP.h>
 
 // This class is a wrapper for the Portable Executable File Format (PE).
 // It's main purpose is to provide an easy way to work with imports and exports
 // from a file, mapped in memory as image.
 class PEImage {
  public:
   // Callback to enumerate sections.
@@ skipping 224 matching lines @@
 inline PIMAGE_IMPORT_DESCRIPTOR PEImage::GetFirstImportChunk() const {
   return reinterpret_cast<PIMAGE_IMPORT_DESCRIPTOR>(
              GetImageDirectoryEntryAddr(IMAGE_DIRECTORY_ENTRY_IMPORT));
 }
 
 inline PIMAGE_EXPORT_DIRECTORY PEImage::GetExportDirectory() const {
   return reinterpret_cast<PIMAGE_EXPORT_DIRECTORY>(
              GetImageDirectoryEntryAddr(IMAGE_DIRECTORY_ENTRY_EXPORT));
 }
 
-#endif  // BASE_SRC_PE_IMAGE_H__
+#endif  // BASE_PE_IMAGE_H_