Move is_orientation_marker into its own file

Bug: skia:8046

This is used both by SkJpegCodec and SkWebpCodec, so make it possible
to use it when SK_HAS_JPEG_LIBRARY is not set.

Change-Id: I34aa3587500cca3d2d74c4eb33945451592bf72b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/175428
Commit-Queue: Leon Scroggins <scroggo@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
diff --git a/BUILD.gn b/BUILD.gn
index 6a17f52..b4140a3 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -871,6 +871,7 @@
     "src/codec/SkEncodedInfo.cpp",
     "src/codec/SkMaskSwizzler.cpp",
     "src/codec/SkMasks.cpp",
+    "src/codec/SkParseEncodedOrigin.cpp",
     "src/codec/SkSampledCodec.cpp",
     "src/codec/SkSampler.cpp",
     "src/codec/SkStreamBuffer.cpp",