refactor: move printing out of chromium_src (#15023)

* remove printing related things from chromium_src

* chore: add printing build flag and patch

* fix: include PrintingService on other platforms too

* fix: printing_handler is only needed on Windows

* fix: format BUILD.gn properly

* fix: rename printing build flag to avoid conflict with chromium

* fix: place previously missed printing calls behind build flag

* fix: accidentally renamed flag in patch file

* fix: don't include all printing strings

* fix: allow ShowItemInFolder and OpenItem to block, fixing a DCHECK crash

* fix: make things compile, some changes got lost while rebasing

* fix: remove rogue line from BUILD.gn

* chore: update patch description

* style: lint fix

* chore: use chromium printing buildflag, move node related stuff out of patch

* revert: remove ScopedAllowBlockingForTesting call

* fix: fix my rebase blooper

* fix: re-add header lost during rebase, update patch

* fix: add <map> include, tweak the patch a bit

* revert: remove rogue diff from patch

* fix: clean up after rebase

build/args/all.gn

@@ -10,4 +10,6 @@ enable_cdm_host_verification = false
 proprietary_codecs = true
 ffmpeg_branding = "Chrome"
 
+enable_basic_printing = true
+
 is_cfi = false