libwebp: update to 0.4.1

third_party/libwebp/enc/layer.c

Index: third_party/libwebp/enc/layer.c
diff --git a/third_party/libwebp/enc/layer.c b/third_party/libwebp/enc/layer.c
deleted file mode 100644
index 24023623598824bf40b605fdd94cf07afb8f630b..0000000000000000000000000000000000000000
--- a/third_party/libwebp/enc/layer.c
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright 2011 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.
-// -----------------------------------------------------------------------------
-//
-// Enhancement layer (for YUV444/422)
-//
-// Author: Skal (pascal.massimino@gmail.com)
-
-#include <stdlib.h>
-
-#include "./vp8enci.h"
-
-//------------------------------------------------------------------------------
-
-void VP8EncInitLayer(VP8Encoder* const enc) {
-  enc->use_layer_ = (enc->pic_->u0 != NULL);
-  enc->layer_data_size_ = 0;
-  enc->layer_data_ = NULL;
-  if (enc->use_layer_) {
-    VP8BitWriterInit(&enc->layer_bw_, enc->mb_w_ * enc->mb_h_ * 3);
-  }
-}
-
-void VP8EncCodeLayerBlock(VP8EncIterator* it) {
-  (void)it;   // remove a warning
-}
-
-int VP8EncFinishLayer(VP8Encoder* const enc) {
-  if (enc->use_layer_) {
-    enc->layer_data_ = VP8BitWriterFinish(&enc->layer_bw_);
-    enc->layer_data_size_ = VP8BitWriterSize(&enc->layer_bw_);
-  }
-  return 1;
-}
-
-void VP8EncDeleteLayer(VP8Encoder* enc) {
-  free(enc->layer_data_);
-}
-