The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3eba56ae7194a05df49230ce8c989fa34832ed5b

commit 3eba56ae7194a05df49230ce8c989fa34832ed5b
Author: Scott Chen <scottchen@chromium.org>
Date: Thu Oct 05 22:00:14 2017

MD Extensions: Add devtools in error-console.

This CL ports over the runtime error stack-trace and dev-view button
that existed in the old extensions page.

Bug:  768609 
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I80fc989ca0b3bcc8af7483a2f475e673e2476674
Reviewed-on: https://chromium-review.googlesource.com/691181
Commit-Queue: Scott Chen <scottchen@chromium.org>
Reviewed-by: Devlin <rdevlin.cronin@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506873}
[modify] https://crrev.com/3eba56ae7194a05df49230ce8c989fa34832ed5b/chrome/app/md_extensions_strings.grdp
[modify] https://crrev.com/3eba56ae7194a05df49230ce8c989fa34832ed5b/chrome/browser/resources/md_extensions/error_page.html
[modify] https://crrev.com/3eba56ae7194a05df49230ce8c989fa34832ed5b/chrome/browser/resources/md_extensions/error_page.js
[modify] https://crrev.com/3eba56ae7194a05df49230ce8c989fa34832ed5b/chrome/browser/resources/md_extensions/service.js
[modify] https://crrev.com/3eba56ae7194a05df49230ce8c989fa34832ed5b/chrome/browser/ui/webui/extensions/extensions_ui.cc