Revert of Update libwebp to version 0.5.0

gyp/libwebp.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'skia_warnings_as_errors': 0,
     'conditions':[
       ['skia_android_framework == 1', {
         'use_system_libwebp': 1,
@@ skipping 69 matching lines @@
             '../third_party/externals/libwebp/src/dsp/enc_sse2.c',
             '../third_party/externals/libwebp/src/dsp/filters.c',
             '../third_party/externals/libwebp/src/dsp/filters_mips_dsp_r2.c',
             '../third_party/externals/libwebp/src/dsp/filters_sse2.c',
             '../third_party/externals/libwebp/src/dsp/lossless.c',
             '../third_party/externals/libwebp/src/dsp/lossless_mips_dsp_r2.c',
             '../third_party/externals/libwebp/src/dsp/lossless_sse2.c',
             '../third_party/externals/libwebp/src/dsp/rescaler.c',
             '../third_party/externals/libwebp/src/dsp/rescaler_mips32.c',
             '../third_party/externals/libwebp/src/dsp/rescaler_mips_dsp_r2.c',
-            '../third_party/externals/libwebp/src/dsp/rescaler_neon.c',
-            '../third_party/externals/libwebp/src/dsp/rescaler_sse2.c',
             '../third_party/externals/libwebp/src/dsp/upsampling.c',
             '../third_party/externals/libwebp/src/dsp/upsampling_mips_dsp_r2.c',
             '../third_party/externals/libwebp/src/dsp/upsampling_sse2.c',
             '../third_party/externals/libwebp/src/dsp/yuv.c',
             '../third_party/externals/libwebp/src/dsp/yuv_mips32.c',
             '../third_party/externals/libwebp/src/dsp/yuv_mips_dsp_r2.c',
             '../third_party/externals/libwebp/src/dsp/yuv_sse2.c',
           ],
           'cflags': [ '-w' ],
           'xcode_settings': { 'WARNING_CFLAGS': [ '-w' ] },
@@ skipping 178 matching lines @@
                   ],
                 },
               },
             ],
           ],
         }
       ],
     }],
   ],
 }