SkDecodingImageGenerator now uses SkStreamRewindable

src/ports/SkImageDecoder_empty.cpp

Index: src/ports/SkImageDecoder_empty.cpp
diff --git a/src/ports/SkImageDecoder_empty.cpp b/src/ports/SkImageDecoder_empty.cpp
index 67214970d44f08803d3dcebcdb0b762156fbebfd..ae0fc36325485ba0f94e6de3a9e8313a246b7f15 100644
--- a/src/ports/SkImageDecoder_empty.cpp
+++ b/src/ports/SkImageDecoder_empty.cpp
@@ -83,11 +83,6 @@ SkBitmap::Allocator* SkImageDecoder::setAllocator(SkBitmap::Allocator*) {
 
 void SkImageDecoder::setSampleSize(int) {}
 
-bool SkImageDecoder::DecodeMemoryToTarget(const void*, size_t, SkImageInfo*,
-                                          const SkImageDecoder::Target*) {
-    return false;
-}
-
 SkBitmap::Config SkImageDecoder::GetDeviceConfig() {
     return SkBitmap::kNo_Config;
 }