Delete dead SkImageDecoder::buildTileIndex and decodeSubset code

src/ports/SkImageDecoder_empty.cpp

 
 /*
  * Copyright 2006 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 "SkBitmap.h"
 #include "SkImage.h"
@@ skipping 25 matching lines @@
 }
 
 bool SkImageDecoder::DecodeStream(SkStreamRewindable*, SkBitmap*, SkColorType, Mode, Format*) {
     return false;
 }
 
 bool SkImageDecoder::DecodeMemory(const void*, size_t, SkBitmap*, SkColorType, Mode, Format*) {
     return false;
 }
 
-bool SkImageDecoder::buildTileIndex(SkStreamRewindable*, int *width, int *height) {
-    return false;
-}
-
-bool SkImageDecoder::onBuildTileIndex(SkStreamRewindable* stream,
-                                      int* /*width*/, int* /*height*/) {
-    delete stream;
-    return false;
-}
-
-
-bool SkImageDecoder::decodeSubset(SkBitmap*, const SkIRect&, SkColorType) {
-    return false;
-}
-
 SkImageDecoder::Format SkImageDecoder::getFormat() const {
     return kUnknown_Format;
 }
 
 SkImageDecoder::Format SkImageDecoder::GetStreamFormat(SkStreamRewindable*) {
     return kUnknown_Format;
 }
 
 const char* SkImageDecoder::GetFormatName(Format) {
     return nullptr;
 }
 
 SkImageDecoder::Peeker* SkImageDecoder::setPeeker(Peeker*) {
     return nullptr;
 }
 
 SkBitmap::Allocator* SkImageDecoder::setAllocator(SkBitmap::Allocator*) {
     return nullptr;
 }
 
 void SkImageDecoder::setSampleSize(int) {}
 
-bool SkImageDecoder::cropBitmap(SkBitmap*, SkBitmap*, int, int, int, int, int,
-                    int, int) {
-    return false;
-}
-
 bool SkImageDecoder::allocPixelRef(SkBitmap*, SkColorTable*) const {
     return false;
 }
 
 /////////////////////////////////////////////////////////////////////////
 
 // Empty implementation for SkMovie.
 
 SkMovie* SkMovie::DecodeStream(SkStreamRewindable* stream) {
     return nullptr;
@@ skipping 29 matching lines @@
 }
 
 SkData* SkImageEncoder::encodeData(const SkBitmap&, int) {
     return nullptr;
 }
 
 bool SkImageEncoder::encodeFile(const char file[], const SkBitmap& bm, int quality) {
     return false;
 }
 /////////////////////////////////////////////////////////////////////////