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The latest version makes it possible to import chai.js with a JS
module "import" statement.

Also:
 - Fixing a few occurrences where the latest version would throw
   errors, as it seems stricter into what can be passed into the
   assert methods. For example passing a string to
   chai.assert.isAbove() now throws an error.
 - Making a small local modification depicted in chromium.patch,
   necessary to run chai.js in d8, which does not gave a window
   or global object.

Bug: 1133198
Change-Id: I1a1503b3503b0f0dc54d537107714421f1865f6c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2498054Reviewed-by: John Lee <johntlee@chromium.org>
Commit-Queue: dpapad <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#820886}