Convert ViewHostMsg_WebUISend so that it is sent via frame (not view).

Bug: 683418, 666525
Change-Id: Id8bf3fa0a69b783b73a075a54ff7154e6d4c7a1e
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_site_isolation
Reviewed-on: https://chromium-review.googlesource.com/701415
Reviewed-by: Nick Carter <nick@chromium.org>
Reviewed-by: Rachel Blum <groby@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Ɓukasz Anforowicz <lukasza@chromium.org>
Cr-Commit-Position: refs/heads/master@{#507414}
7 files changed