[automerge] Replace BitmapRegionDecoder with ImageDecoder 2p: 08d1494421

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/16678490

Bug: 204087139
Change-Id: I0101fcca7c319d0337d5b411b95db7bfc578b79f
Merged-In: I59cf3c21edce836ffbe9f24a08b3a8e077c5fcf3