Move screen capturers from remoting/capturer to media/video/capturer/screen

remoting/capturer/differ_block.h

-// Copyright (c) 2011 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 REMOTING_HOST_DIFFER_BLOCK_H_
-#define REMOTING_HOST_DIFFER_BLOCK_H_
-
-#include "base/basictypes.h"
-
-namespace remoting {
-
-// Size (in pixels) of each square block used for diffing.
-// This must be a multiple of sizeof(uint64)/8.
-static const int kBlockSize = 32;
-
-// Format: BGRA 32 bit.
-static const int kBytesPerPixel = 4;
-
-// Low level functions to compare 2 blocks of pixels.
-//   zero means the blocks are identical.
-//   one means  the blocks are different.
-int BlockDifference(const uint8* image1, const uint8* image2, int stride);
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_DIFFER_BLOCK_H_