Add recent code rewrite to .git-blame-ignore-revs

R=leszeks@chromium.org

No-Try: true
Bug: v8:9183
Change-Id: I9372bdc5d3789a1bbc50ef2737577c4f60173bce
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1627342Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61776}

.git-blame-ignore-revs

@@ -20,3 +20,6 @@
 
 # Update of quotations in DEPS file.
 e50b49a0e38b34e2b28e026f4d1c7e0da0c7bb1a
+
+# Rewrite code base to use "." instead of "->" to access Object members.
+878ccb33bd3cf0e6dc018ff8d15843f585ac07be