Also, note that by default Flatbuffer::Verifier allows a max number of 10^6 tables. See "Access of untrusted buffers" in https://google.github.io/flatbuffers/md__cpp_usage.html.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/42ac670f7314a95c31b51819961aa2c3b8c6c835

commit 42ac670f7314a95c31b51819961aa2c3b8c6c835
Author: Karan Bhatia <karandeepb@chromium.org>
Date: Sat Sep 01 03:11:23 2018

Declarative Net Request: Limit the no. of rules that an extension can provide.

This CL limits the no. of rules that an extension can provide to 30000. If an
extension provides more rules than this limit, those rules will be ignored and
an install warning will be surfaced to the user upon installation on the
extensions page. These won't re-surface once the browser restarts for packed
extensions.

BUG= 767977 

Change-Id: I95c824f4233dd7c0b77393fa817522b9b1c70681
Reviewed-on: https://chromium-review.googlesource.com/1198010
Commit-Queue: Karan Bhatia <karandeepb@chromium.org>
Reviewed-by: Istiaque Ahmed <lazyboy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#588257}
[modify] https://crrev.com/42ac670f7314a95c31b51819961aa2c3b8c6c835/chrome/browser/extensions/api/declarative_net_request/rule_indexing_unittest.cc
[modify] https://crrev.com/42ac670f7314a95c31b51819961aa2c3b8c6c835/extensions/browser/api/declarative_net_request/constants.cc
[modify] https://crrev.com/42ac670f7314a95c31b51819961aa2c3b8c6c835/extensions/browser/api/declarative_net_request/constants.h
[modify] https://crrev.com/42ac670f7314a95c31b51819961aa2c3b8c6c835/extensions/browser/api/declarative_net_request/utils.cc
[modify] https://crrev.com/42ac670f7314a95c31b51819961aa2c3b8c6c835/extensions/common/api/declarative_net_request.idl