Remove dependencies on Android's forked decoder libraries

src/images/SkImageDecoder_libjpeg.cpp

 /*
  * Copyright 2007 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkImageDecoder.h"
 #include "SkImageEncoder.h"
@@ skipping 36 matching lines @@
 SK_CONF_DECLARE(bool, c_suppressJPEGImageDecoderWarnings,
                 "images.jpeg.suppressDecoderWarnings",
                 DEFAULT_FOR_SUPPRESS_JPEG_IMAGE_DECODER_WARNINGS,
                 "Suppress most JPG warnings when calling decode functions.");
 SK_CONF_DECLARE(bool, c_suppressJPEGImageDecoderErrors,
                 "images.jpeg.suppressDecoderErrors",
                 DEFAULT_FOR_SUPPRESS_JPEG_IMAGE_DECODER_ERRORS,
                 "Suppress most JPG error messages when decode "
                 "function fails.");
 
-#if defined(SK_BUILD_FOR_ANDROID) && !defined(SK_JPEG_NO_INDEX_SUPPORTED)
-#define SK_JPEG_INDEX_SUPPORTED
-#endif
-
 //////////////////////////////////////////////////////////////////////////
 //////////////////////////////////////////////////////////////////////////
 
 static void do_nothing_emit_message(jpeg_common_struct*, int) {
     /* do nothing */
 }
 static void do_nothing_output_message(j_common_ptr) {
     /* do nothing */
 }
 
@@ skipping 1379 matching lines @@
     return SkImageDecoder::kUnknown_Format;
 }
 
 static SkImageEncoder* sk_libjpeg_efactory(SkImageEncoder::Type t) {
     return (SkImageEncoder::kJPEG_Type == t) ? new SkJPEGImageEncoder : nullptr;
 }
 
 static SkImageDecoder_DecodeReg gDReg(sk_libjpeg_dfactory);
 static SkImageDecoder_FormatReg gFormatReg(get_format_jpeg);
 static SkImageEncoder_EncodeReg gEReg(sk_libjpeg_efactory);