Make AndroidOptions const

src/codec/SkWebpAdapterCodec.cpp

Index: src/codec/SkWebpAdapterCodec.cpp
diff --git a/src/codec/SkWebpAdapterCodec.cpp b/src/codec/SkWebpAdapterCodec.cpp
index 0804e748a291e9aaf7f7a8b1bdcdefd4ed7be6ab..fb1eacee77ae0161b2e5b0ec43b2d6db1993dac6 100644
--- a/src/codec/SkWebpAdapterCodec.cpp
+++ b/src/codec/SkWebpAdapterCodec.cpp
@@ -24,7 +24,7 @@ bool SkWebpAdapterCodec::onGetSupportedSubset(SkIRect* desiredSubset) const {
 }
 
 SkCodec::Result SkWebpAdapterCodec::onGetAndroidPixels(const SkImageInfo& info, void* pixels,
-        size_t rowBytes, AndroidOptions& options) {
+        size_t rowBytes, const AndroidOptions& options) {
     // SkWebpCodec will support pretty much any dimensions that we provide, but we want
     // to be stricter about the type of scaling that we allow, so we will add an extra
     // check here.