Check for BrowserContext correctness for native messsage hosts.

Previously we weren't able to perform the check, now we can. So
do not exclude native message hosts' browser context correctness
check in MessageService::OpenChannelToExtension().

Bug: 925918
Test: None, no behavior change expected.
Change-Id: I41924c6c6597e0fe72e1e421fa11ed947608322e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1512695
Auto-Submit: Istiaque Ahmed <lazyboy@chromium.org>
Commit-Queue: Istiaque Ahmed <lazyboy@chromium.org>
Commit-Queue: Maksim Ivanov <emaxx@chromium.org>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#639227}
1 file changed