GitLab

Current implementation of search_engine.js finds Open Search <link> when
the Js file is injected without a check on page's loading status. This CL
adds a check for document.readyState, so that the finding process will
only be executed when the page is fully loaded.

Bug: 433824
Change-Id: I3384081dd3079f15dba6a727cf1373edc4b593ba
Reviewed-on: https://chromium-review.googlesource.com/c/1323716
Commit-Queue: Yi Su <mrsuyi@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606406}