Move BinaryFeatureExtractor and PEImageReader to common.

chrome/browser/safe_browsing/binary_feature_extractor.h

-// Copyright 2014 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.
-//
-// Utility functions to extract file features for malicious binary detection.
-// Each platform has its own implementation of this class.
-
-#ifndef CHROME_BROWSER_SAFE_BROWSING_BINARY_FEATURE_EXTRACTOR_H_
-#define CHROME_BROWSER_SAFE_BROWSING_BINARY_FEATURE_EXTRACTOR_H_
-
-#include "base/basictypes.h"
-#include "base/memory/ref_counted.h"
-
-namespace base {
-class FilePath;
-}
-
-namespace safe_browsing {
-class ClientDownloadRequest_Digests;
-class ClientDownloadRequest_ImageHeaders;
-class ClientDownloadRequest_SignatureInfo;
-
-class BinaryFeatureExtractor
-    : public base::RefCountedThreadSafe<BinaryFeatureExtractor> {
- public:
-  // The type and defined values for a bitfield that controls aspects of image
-  // header extraction.
-  typedef uint32_t ExtractHeadersOption;
-  static const ExtractHeadersOption kDefaultOptions = 0;
-  static const ExtractHeadersOption kOmitExports = 1U << 0;
-
-  BinaryFeatureExtractor();
-
-  // Fills in the DownloadRequest_SignatureInfo for the given file path.
-  // This method may be called on any thread.
-  virtual void CheckSignature(
-      const base::FilePath& file_path,
-      ClientDownloadRequest_SignatureInfo* signature_info);
-
-  // Populates |image_headers| with the PE image headers of |file_path|.
-  // |options| is a bitfield controlling aspects of extraction. Returns true if
-  // |image_headers| is populated with any information.
-  virtual bool ExtractImageHeaders(
-      const base::FilePath& file_path,
-      ExtractHeadersOption options,
-      ClientDownloadRequest_ImageHeaders* image_headers);
-
-  // Populates |digests.sha256| with the SHA256 digest of |file_path|.
-  virtual void ExtractDigest(const base::FilePath& file_path,
-                             ClientDownloadRequest_Digests* digests);
-
- protected:
-  friend class base::RefCountedThreadSafe<BinaryFeatureExtractor>;
-  virtual ~BinaryFeatureExtractor();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(BinaryFeatureExtractor);
-};
-}  // namespace safe_browsing
-
-#endif  // CHROME_BROWSER_SAFE_BROWSING_BINARY_FEATURE_EXTRACTOR_H_