The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ea6510d0290d12d09ca9bb29e4b332718d06e19d

commit ea6510d0290d12d09ca9bb29e4b332718d06e19d
Author: Mike Baxley <baxley@chromium.org>
Date: Fri Jun 02 16:36:21 2017

Remove ios/web:test_support from BUILD.gn.

Downstream clients now use the new smaller targets, so this
can safely be removed.

Bug:  727860 
Change-Id: Ib5028bcd2c8abe5157f8ec24dd5c10b6e1712270
Reviewed-on: https://chromium-review.googlesource.com/521753
Reviewed-by: Eugene But <eugenebut@chromium.org>
Commit-Queue: Mike Baxley <baxley@chromium.org>
Cr-Commit-Position: refs/heads/master@{#476690}
[modify] https://crrev.com/ea6510d0290d12d09ca9bb29e4b332718d06e19d/ios/chrome/browser/ui/tools_menu/BUILD.gn
[modify] https://crrev.com/ea6510d0290d12d09ca9bb29e4b332718d06e19d/ios/chrome/browser/ui/tools_menu/request_desktop_mobile_site_egtest.mm
[modify] https://crrev.com/ea6510d0290d12d09ca9bb29e4b332718d06e19d/ios/clean/chrome/browser/ui/tools/BUILD.gn
[modify] https://crrev.com/ea6510d0290d12d09ca9bb29e4b332718d06e19d/ios/components/io_thread/BUILD.gn
[modify] https://crrev.com/ea6510d0290d12d09ca9bb29e4b332718d06e19d/ios/web/BUILD.gn
[delete] https://crrev.com/47be21fa9c0e81c2fdb2ab57002e08152cde13a0/ios/web/public/test/http_server.h
[delete] https://crrev.com/47be21fa9c0e81c2fdb2ab57002e08152cde13a0/ios/web/public/test/http_server_util.h