Add rouslan@ as owner of PaymentRequestTestBridge.java

Change-Id: I70060a6266bf78860d73e0c06cb468593027c28e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2212168
Auto-Submit: Ramin Halavati <rhalavati@chromium.org>
Commit-Queue: Theresa  <twellington@chromium.org>
Reviewed-by: Rouslan Solomakhin <rouslan@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#771118}

chrome/test/android/test_support/src/org/chromium/chrome/test_support/OWNERS

+per-file PaymentRequestTestBridge.java=rouslan@chromium.org
\ No newline at end of file