[fuchsia] Add OWNERS_FUCHSIA to allow fuchsia owners to update the DEPS

The rollers will be updated to ask fuchsia team to take responsibility
of the updates of the fuchsia components. http://review.skia.org/938236.
So this change allows fuchsia team members to approve the changes like
http://go/dart-reviews/404260.

Bug: b/389763809
Change-Id: I93dd44a486ab1c7beff2ddd730a28b5b910ab9dc
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/404361
Commit-Queue: Zijie He <zijiehe@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>

OWNERS

@@ -10,6 +10,8 @@ vsm@google.com #{LAST_RESORT_SUGGESTION}
 
 # DEPS
 per-file DEPS=file:/tools/OWNERS_ENG
+# Updates fuchsia components only.
+per-file DEPS=file:/tools/OWNERS_FUCHSIA
 
 # Changelog, AUTHORS, and .git* do not require approval.
 per-file CHANGELOG.md,AUTHORS,WATCHLISTS,.gitattributes,.gitconfig,.gitignore,sdk.code-workspace=*

tools/OWNERS_FUCHSIA

@@ -0,0 +1,9 @@
+# Update fuchsia components in DEPS only, no other changes should go here, nor
+# other permissions should be granted.
+
+# Aaron has no dart/sdk account yet.
+# aknobloch@google.com
+jonnywang@google.com
+
+# Always assign roller changes to zijiehe@google.com first.
+zijiehe@google.com