Extract BookmarksFileImporter from Firefox2Importer.

chrome/browser/favicon/favicon_util.h

 // Copyright (c) 2012 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 CHROME_BROWSER_FAVICON_FAVICON_UTIL_H_
 #define CHROME_BROWSER_FAVICON_FAVICON_UTIL_H_
 
+#include <vector>
+
 #include "ui/base/layout.h"
 
 class GURL;
 
 namespace content {
 class RenderViewHost;
 }
 
 namespace gfx {
 class Image;
@@ skipping 20 matching lines @@
       const std::vector<history::FaviconBitmapResult>& png_data,
       const std::vector<ui::ScaleFactor>& scale_factors,
       int favicon_size);
 
   // Takes a vector of bitmaps and returns the index of the image that will best
   // produce an image of size |desired_size| for the given |scale_factors|.
   static size_t SelectBestFaviconFromBitmaps(
       const std::vector<SkBitmap>& bitmaps,
       const std::vector<ui::ScaleFactor>& scale_factors,
       int desired_size);
+
+  // Given raw image data, decodes the icon, re-sampling to the correct size as
+  // necessary, and re-encodes as PNG data in the given output vector. Returns
+  // true on success.
+  static bool ReencodeFavicon(const unsigned char* src_data,
+                              size_t src_len,
+                              std::vector<unsigned char>* png_data);
 };
 
 #endif  // CHROME_BROWSER_FAVICON_FAVICON_UTIL_H_