ime: Add jiwan@ and myy@ to OWNERS for IME code.

Change-Id: I82abcab5d9300685fc58b81b300cac0ea0e0cff1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2371846Reviewed-by: My Nguyen <myy@chromium.org>
Reviewed-by: David Vallet <dvallet@chromium.org>
Reviewed-by: Jing Wang <jiwan@chromium.org>
Commit-Queue: Darren Shen <shend@chromium.org>
Cr-Commit-Position: refs/heads/master@{#801233}

chrome/browser/chromeos/input_method/OWNERS

@@ -3,6 +3,8 @@ keithlee@chromium.org
 shend@chromium.org
 shuchen@chromium.org
 yhanada@chromium.org
+jiwan@chromium.org
+myy@chromium.org
 
 # backup reviewers
 yukishiino@chromium.org