Add tbansal to predictors owners

Change-Id: Ie27b6fe8ed3f9b2e769baf4111c2229f0f3a6803
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2063894
Auto-Submit: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Alex Ilin <alexilin@chromium.org>
Commit-Queue: Alex Ilin <alexilin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#742530}

chrome/browser/predictors/OWNERS

 alexilin@chromium.org
 lizeb@chromium.org
 pasko@chromium.org
+tbansal@chromium.org
+
 # COMPONENT: Internals>Preload