Reland "Deserialize MultiPictureDocument based SKP files (with image sharing proc) in wasm debugger."

This is a reland of 7635013ad16a60cfa5ff93af28c5fab8927c92ce

Original change's description:
> Deserialize MultiPictureDocument based SKP files (with image sharing proc) in wasm debugger.
> 
> Change-Id: I73affae3cd05a2aa6ac1c75c8e049d352bbf3a85
> Bug: 9176
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/217135
> Commit-Queue: Nathaniel Nifong <nifong@google.com>
> Reviewed-by: Derek Sollenberger <djsollen@google.com>
> Reviewed-by: Kevin Lubick <kjlubick@google.com>

Bug: 9176
Change-Id: Ifef1ff45ac0013ba3015f88c7ecd75527b28b604
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/222505
Commit-Queue: Nathaniel Nifong <nifong@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
diff --git a/public.bzl b/public.bzl
index f3f56af..3df6fc9 100644
--- a/public.bzl
+++ b/public.bzl
@@ -453,6 +453,7 @@
         "experimental/svg/model/*.h",
         "gm/*.cpp",
         "gm/*.h",
+        "src/utils/SkMultiPictureDocument.cpp",
         "src/xml/*.cpp",
         "tests/*.cpp",
         "tests/*.h",
@@ -499,6 +500,7 @@
         "tools/gpu/**/*.h",
         "tools/random_parse_path.cpp",
         "tools/random_parse_path.h",
+        "tools/SkSharingProc.cpp",
         "tools/ToolUtils.cpp",
         "tools/ToolUtils.h",
         "tools/timer/*.cpp",