Add support for adding 256x256 pngs to Windows .ico files.

chrome/browser/web_applications/web_app_win.cc

 // 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.
 
 #include "chrome/browser/web_applications/web_app.h"
 
 #include <shlobj.h>
 
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 17 matching lines @@
 // Calculates image checksum using MD5.
 void GetImageCheckSum(const SkBitmap& image, base::MD5Digest* digest) {
   DCHECK(digest);
 
   SkAutoLockPixels image_lock(image);
   MD5Sum(image.getPixels(), image.getSize(), digest);
 }
 
 // Saves |image| as an |icon_file| with the checksum.
 bool SaveIconWithCheckSum(const FilePath& icon_file, const SkBitmap& image) {
-  if (!IconUtil::CreateIconFileFromSkBitmap(image, icon_file))
+  if (!IconUtil::CreateIconFileFromSkBitmap(image, SkBitmap(), icon_file))
     return false;
 
   base::MD5Digest digest;
   GetImageCheckSum(image, &digest);
 
   FilePath cheksum_file(icon_file.ReplaceExtension(kIconChecksumFileExt));
   return file_util::WriteFile(cheksum_file,
                               reinterpret_cast<const char*>(&digest),
                               sizeof(digest)) == sizeof(digest);
 }
@@ skipping 302 matching lines @@
       // they are all unpinned.
       base::win::TaskbarUnpinShortcutLink(j->value().c_str());
       file_util::Delete(*j, false);
     }
   }
 }
 
 }  // namespace internals
 
 }  // namespace web_app