Add nzolghadr to content/browser/renderer_host/input/OWNERS

Navid has been actively reviewing/contributing to input.

Bug: None
Change-Id: I0084071fc3dd21fb1ff8b1eeea1f43520c357046
Reviewed-on: https://chromium-review.googlesource.com/1217322Reviewed-by: Dave Tapuska <dtapuska@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#590034}

content/browser/renderer_host/input/OWNERS

 dtapuska@chromium.org
 tdresser@chromium.org
+nzolghadr@chromium.org
 
 
 # TEAM: input-dev@chromium.org