Updating merging.md with latest commit ID take care of.

Change-Id: I3fe9e64585cbf6115748e9f8eddcdb84475d9aca
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2083407Reviewed-by: Dan H <harringtond@chromium.org>
Commit-Queue: Jonathan Freed <freedjm@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746089}

chrome/android/feed/merging.md

@@ -4,4 +4,4 @@
 and [feed wire protos](https://cs.chromium.org/chromium/src/components/feed/core/proto/wire/)
 are hand-merged from https://chromium.googlesource.com/feed regularly.
 
-Last merged commit ID: aa5e906377aaec1263ec77fe66c0e069217af54d
+Last merged commit ID: 11221b03f18e4c3357014306536bd06fc6b53aac