Rename encoders to Sk*ImageEncoder

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1836493002
CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Release-CMake-Trybot,Build-Mac-Clang-x86_64-Release-CMake-Trybot

Review URL: https://codereview.chromium.org/1836493002
diff --git a/src/codec/SkJpegDecoderMgr.h b/src/codec/SkJpegDecoderMgr.h
index 7d34b67..e1127ba 100644
--- a/src/codec/SkJpegDecoderMgr.h
+++ b/src/codec/SkJpegDecoderMgr.h
@@ -10,10 +10,8 @@
 
 #include "SkCodec.h"
 #include "SkCodecPriv.h"
-#include "SkJpegUtility_codec.h"
-
-// stdio is needed for jpeglib
 #include <stdio.h>
+#include "SkJpegUtility.h"
 
 extern "C" {
     #include "jpeglib.h"