Keep only base/extractor.[cc|h].

base/safe_format.h

-// Copyright 2010 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-//
-// As of Sept 2010, the implementation of Format() in ATL's CStringT uses a
-// fixed internal buffer of 1024 bytes; any output beyond that point will
-// be silently truncated.  (AppendFormat() is affected by the same bug.)
-// A bug has been filed with Microsoft; in the meantime, we provide the
-// following safer implementations of Format/AppendFormat.  These functions
-// currently support up to MAX_INT characters and will return an HRESULT
-// error code on overflow or invalid parameters.
-
-#ifndef OMAHA_BASE_SAFE_FORMAT_H_
-#define OMAHA_BASE_SAFE_FORMAT_H_
-
-#include <atlstr.h>
-#include <strsafe.h>
-
-namespace omaha {
-
-void SafeCStringWFormatV(CStringW* dest_str,
-                         LPCWSTR format_str,
-                         va_list arg_list);
-
-void SafeCStringAFormatV(CStringA* dest_str,
-                         LPCSTR format_str,
-                         va_list arg_list);
-
-void SafeCStringWFormat(CStringW* dest_str, LPCWSTR format_str, ...);
-
-void SafeCStringAFormat(CStringA* dest_str, LPCSTR format_str, ...);
-
-void SafeCStringWAppendFormat(CStringW* dest_str, LPCWSTR format_str, ...);
-
-void SafeCStringAAppendFormat(CStringA* dest_str, LPCSTR format_str, ...);
-
-}  // namespace omaha
-
-#ifdef UNICODE
-#define SafeCStringFormatV       SafeCStringWFormatV
-#define SafeCStringFormat        SafeCStringWFormat
-#define SafeCStringAppendFormat  SafeCStringWAppendFormat
-#else
-#define SafeCStringFormatV       SafeCStringAFormatV
-#define SafeCStringFormat        SafeCStringAFormat
-#define SafeCStringAppendFormat  SafeCStringAAppendFormat
-#endif  // UNICODE
-
-#endif  // OMAHA_BASE_SAFE_FORMAT_H_