Crop the user-specified profile image for WebUI

components/user_manager/user_image/user_image.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.
 
 #ifndef COMPONENTS_USER_MANAGER_USER_IMAGE_USER_IMAGE_H_
 #define COMPONENTS_USER_MANAGER_USER_IMAGE_USER_IMAGE_H_
 
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "components/user_manager/user_manager_export.h"
 #include "ui/gfx/image/image_skia.h"
 #include "url/gurl.h"
 
 namespace user_manager {
 
 // Wrapper class storing a still image and its bytes representation for
 // WebUI in a web-compatible format such as JPEG. Could be used for storing
 // profile images and user wallpapers.
 class USER_MANAGER_EXPORT UserImage {
  public:
   // Used to store bytes representation for WebUI.
   // TODO(ivankr): replace with RefCountedMemory to prevent copying.
   typedef std::vector<unsigned char> Bytes;
 
+  // Encodes the given bitmap to bytes representation for WebUI. Returns null
+  // on failure.
+  static scoped_ptr<Bytes> Encode(const SkBitmap& bitmap);
+
   // Creates a new instance from a given still frame and tries to encode it
   // to bytes representation for WebUI.
   // TODO(ivankr): remove eventually.
   static UserImage CreateAndEncode(const gfx::ImageSkia& image);
 
   // Create instance with an empty still frame and no bytes
   // representation for WebUI.
   UserImage();
 
   // Creates a new instance from a given still frame without any bytes
@@ skipping 33 matching lines @@
   GURL url_;
 
   // If image was loaded from the local file, file path is stored here.
   base::FilePath file_path_;
   bool is_safe_format_;
 };
 
 }  // namespace user_manager
 
 #endif  // COMPONENTS_USER_MANAGER_USER_IMAGE_USER_IMAGE_H_