iwyu: Cleanup in the following files:

base/file_path.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/file_path.h"
+
+#include <string.h>
 #include <algorithm>
 
-#include "base/file_path.h"
-
-#if defined(OS_WIN)
-#include <windows.h>
-#elif defined(OS_MACOSX)
-#include <CoreFoundation/CoreFoundation.h>
-#endif
-
+#include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/pickle.h"
 
 // These includes are just for the *Hack functions, and should be removed
 // when those functions are removed.
 #include "base/string_piece.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/utf_string_conversions.h"
 
 #if defined(OS_MACOSX)
 #include "base/mac/scoped_cftyperef.h"
 #include "base/third_party/icu/icu_utf.h"
 #endif
 
+#if defined(OS_WIN)
+#include <windows.h>
+#elif defined(OS_MACOSX)
+#include <CoreFoundation/CoreFoundation.h>
+#endif
+
 #if defined(FILE_PATH_USES_WIN_SEPARATORS)
 const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("\\/");
 #else  // FILE_PATH_USES_WIN_SEPARATORS
 const FilePath::CharType FilePath::kSeparators[] = FILE_PATH_LITERAL("/");
 #endif  // FILE_PATH_USES_WIN_SEPARATORS
 
 const FilePath::CharType FilePath::kCurrentDirectory[] = FILE_PATH_LITERAL(".");
 const FilePath::CharType FilePath::kParentDirectory[] = FILE_PATH_LITERAL("..");
 
 const FilePath::CharType FilePath::kExtensionSeparator = FILE_PATH_LITERAL('.');
@@ skipping 1160 matching lines @@
 
 #if defined(FILE_PATH_USES_WIN_SEPARATORS)
 FilePath FilePath::NormalizeWindowsPathSeparators() const {
   StringType copy = path_;
   for (size_t i = 1; i < arraysize(kSeparators); ++i) {
     std::replace(copy.begin(), copy.end(), kSeparators[i], kSeparators[0]);
   }
   return FilePath(copy);
 }
 #endif