Tab Search: Add Roman to OWNERS files

Bug: None
Change-Id: Ie704de6fb88fd7f91b1bfd5b0fd0eec92ab3a0b6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2511669Reviewed-by: Yuheng Huang <yuhengh@chromium.org>
Commit-Queue: Thomas Lukaszewicz <tluk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822856}

chrome/browser/resources/tab_search/OWNERS

 robliao@chromium.org
 tluk@chromium.org
 yuhengh@chromium.org
+romanarora@chromium.org
 
 # COMPONENT: UI>Browser>TabSearch

chrome/browser/ui/views/tab_search/OWNERS

 robliao@chromium.org
 tluk@chromium.org
 yuhengh@chromium.org
+romanarora@chromium.org
 
 # COMPONENT: UI>Browser>TabSearch

chrome/browser/ui/webui/tab_search/OWNERS

 robliao@chromium.org
 tluk@chromium.org
 yuhengh@chromium.org
+romanarora@chromium.org
 
 per-file *.mojom=set noparent
 per-file *.mojom=file://ipc/SECURITY_OWNERS