these files are being removed from skia

Will allow us to re-land this

https://skia-review.googlesource.com/c/9891/

BUG=skia:6366

Change-Id: I8a82610309f835065487039883180b8a35733a76
Reviewed-on: https://pdfium-review.googlesource.com/3116
Commit-Queue: Mike Reed <reed@google.com>
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/skia/BUILD.gn b/skia/BUILD.gn
index 723e872..cd9e40c 100644
--- a/skia/BUILD.gn
+++ b/skia/BUILD.gn
@@ -225,12 +225,10 @@
 
   # Remove unused util files include in utils.gypi
   sources -= [
-    "//third_party/skia/src/utils/SkBoundaryPatch.cpp",
     "//third_party/skia/src/utils/SkCamera.cpp",
     "//third_party/skia/src/utils/SkDumpCanvas.cpp",
     "//third_party/skia/src/utils/SkFrontBufferedStream.cpp",
     "//third_party/skia/src/utils/SkInterpolator.cpp",
-    "//third_party/skia/src/utils/SkMeshUtils.cpp",
     "//third_party/skia/src/utils/SkParsePath.cpp",
   ]