commit aed0e5425bf2021fac85173daac10145f6a58a2a
author Devlin Cronin <rdevlin.cronin@chromium.org> Fri Jan 26 22:05:29 2018
committer Commit Bot <commit-bot@chromium.org> Fri Jan 26 22:05:29 2018
tree f8baad75877c5789ef9665c5167ed654d528f1d4
parent 5d2531613139a1c409dfacd28d03b05b2100fcfe

[Extensions] Change Mime-Type deducation in URLRequestExtensionJob

Modify URLRequestExtensionJob to determine the mime type of a requested
file through net::GetWellKnownMimeTypeFromExtension(), rather than
URLRequestFileJob::GetMimeType(). The difference here is that the latter
will include platform-specific modifications. This means that if another
application on the users machine specified a different mime type for an
extension, that type would be used.

This causes problems with modules in extensions, in the cases where a
different application has set a different mime type for .js files, since
modules have strict mime type requirements.

Use GetWellKnownMimeTypeFromExtension(), and add .js to the list of
primary mappings in mime_util.cc.

Bug: 797712

Change-Id: I27fea0479268520abd08fb62a501d213a3a04f52
Reviewed-on: https://chromium-review.googlesource.com/885401
Reviewed-by: Asanka Herath <asanka@chromium.org>
Commit-Queue: Devlin <rdevlin.cronin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532070}