libwebp: update to 0.4.1

third_party/libwebp/utils/alpha_processing.h

Index: third_party/libwebp/utils/alpha_processing.h
diff --git a/third_party/libwebp/utils/alpha_processing.h b/third_party/libwebp/utils/alpha_processing.h
deleted file mode 100644
index 80e1ae45ddef34496c4e41641b3eaaec5c1e8337..0000000000000000000000000000000000000000
--- a/third_party/libwebp/utils/alpha_processing.h
+++ /dev/null
@@ -1,46 +0,0 @@
-// Copyright 2013 Google Inc. All Rights Reserved.
-//
-// Use of this source code is governed by a BSD-style license
-// that can be found in the COPYING file in the root of the source
-// tree. An additional intellectual property rights grant can be found
-// in the file PATENTS. All contributing project authors may
-// be found in the AUTHORS file in the root of the source tree.
-// -----------------------------------------------------------------------------
-//
-// Utilities for processing transparent channel.
-//
-// Author: Skal (pascal.massimino@gmail.com)
-
-#ifndef WEBP_UTILS_ALPHA_PROCESSING_H_
-#define WEBP_UTILS_ALPHA_PROCESSING_H_
-
-#include "../webp/types.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// Pre-Multiply operation transforms x into x * A / 255  (where x=Y,R,G or B).
-// Un-Multiply operation transforms x into x * 255 / A.
-
-// Pre-Multiply or Un-Multiply (if 'inverse' is true) argb values in a row.
-void WebPMultARGBRow(uint32_t* const ptr, int width, int inverse);
-
-// Same a WebPMultARGBRow(), but for several rows.
-void WebPMultARGBRows(uint8_t* ptr, int stride, int width, int num_rows,
-                      int inverse);
-
-// Same for a row of single values, with side alpha values.
-void WebPMultRow(uint8_t* const ptr, const uint8_t* const alpha,
-                 int width, int inverse);
-
-// Same a WebPMultRow(), but for several 'num_rows' rows.
-void WebPMultRows(uint8_t* ptr, int stride,
-                  const uint8_t* alpha, int alpha_stride,
-                  int width, int num_rows, int inverse);
-
-#ifdef __cplusplus
-}    // extern "C"
-#endif
-
-#endif    // WEBP_UTILS_ALPHA_PROCESSING_H_