Add rouslan@ to OWNERS for Android password generation UI.

BUG=412150

Review URL: https://codereview.chromium.org/691883002

Cr-Commit-Position: refs/heads/master@{#302152}

chrome/android/java/src/org/chromium/chrome/browser/autofill/OWNERS

 aurimas@chromium.org
 aruslan@chromium.org
+
+per-file PasswordGeneration*=rouslan@chromium.org

chrome/browser/ui/android/autofill/OWNERS

 aruslan@chromium.org
 aurimas@chromium.org
+
+per-file password_generation_popup_view_android.*=rouslan@chromium.org