libwebp: update to 0.4.1

third_party/libwebp/BUILD.gn

Index: third_party/libwebp/BUILD.gn
diff --git a/third_party/libwebp/BUILD.gn b/third_party/libwebp/BUILD.gn
index a107607c20679919053dc461d1155962083f61af..8de847f53e74c9e97568c60066d9c39eac0c5759 100644
--- a/third_party/libwebp/BUILD.gn
+++ b/third_party/libwebp/BUILD.gn
@@ -13,7 +13,6 @@ source_set("libwebp_dec") {
     "dec/frame.c",
     "dec/idec.c",
     "dec/io.c",
-    "dec/layer.c",
     "dec/quant.c",
     "dec/tree.c",
     "dec/vp8.c",
@@ -47,15 +46,24 @@ source_set("libwebp_demux") {
 
 source_set("libwebp_dsp") {
   sources = [
+    "dsp/alpha_processing.c",
     "dsp/cpu.c",
     "dsp/dec.c",
+    "dsp/dec_clip_tables.c",
+    "dsp/dec_mips32.c",
     "dsp/dec_sse2.c",
     "dsp/enc.c",
+    "dsp/enc_avx2.c",
+    "dsp/enc_mips32.c",
     "dsp/enc_sse2.c",
     "dsp/lossless.c",
+    "dsp/lossless_mips32.c",
+    "dsp/lossless_sse2.c",
     "dsp/upsampling.c",
     "dsp/upsampling_sse2.c",
     "dsp/yuv.c",
+    "dsp/yuv_mips32.c",
+    "dsp/yuv_sse2.c",
   ]
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
@@ -82,9 +90,10 @@ source_set("libwebp_dsp") {
 # TODO(GYP):
 #    'variables': {
 #      'neon_sources': [
-#        'dsp/dec_neon.c',
-#        'dsp/enc_neon.c',
-#        'dsp/upsampling_neon.c',
+#        "dsp/dec_neon.c",
+#        "dsp/enc_neon.c",
+#        "dsp/lossless_neon.c",
+#        "dsp/upsampling_neon.c",
 #      ]
 #    },
 #    {
@@ -107,6 +116,8 @@ source_set("libwebp_dsp") {
 #              'sources': [
 #                '<@(neon_sources)'
 #              ],
+#              # avoid an ICE with gcc-4.9: b/15574841
+#              'cflags': [ '-frename-registers' ],
 #            },{  # "target_arch != "arm|arm64" or arm_version < 7"
 #              'type': 'none',
 #            }],
@@ -133,8 +144,11 @@ source_set("libwebp_enc") {
     "enc/frame.c",
     "enc/histogram.c",
     "enc/iterator.c",
-    "enc/layer.c",
     "enc/picture.c",
+    "enc/picture_csp.c",
+    "enc/picture_psnr.c",
+    "enc/picture_rescale.c",
+    "enc/picture_tools.c",
     "enc/quant.c",
     "enc/syntax.c",
     "enc/token.c",
@@ -152,7 +166,6 @@ source_set("libwebp_enc") {
 
 source_set("libwebp_utils") {
   sources = [
-    "utils/alpha_processing.c",
     "utils/bit_reader.c",
     "utils/bit_writer.c",
     "utils/color_cache.c",