[Extensions] Migrate uses of chrome.extension.connectNative.

These are replaced by calls to chrome.runtime.connectNative.

Bug: 40698663
Change-Id: Ifbdf87407ca286b59fee69ab41771a8d04cfaac2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5388893


Auto-Submit: David Bertoni <dbertoni@chromium.org>
Reviewed-by: Kelvin Jiang <kelvinjiang@chromium.org>
Commit-Queue: David Bertoni <dbertoni@chromium.org>
Commit-Queue: Kelvin Jiang <kelvinjiang@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1277112}