Remove now-redundant promise rejection event tests

Remove now-redundant promise rejection event tests

These tests were upstreamed to web-platform-tests in
https://github.com/w3c/web-platform-tests/pull/2388. Several
Chromium-specific tests remain but the ones deleted in this commit are
redundant with the versions now found in
third_party/WebKit/LayoutTests/external/wpt/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/.

BUG=702025
Review-Url: https://codereview.chromium.org/2798273002
Cr-Commit-Position: refs/heads/master@{#462422}
Committed: https://chromium.googlesource.com/chromium/src/+/1957a5e6746fa96d51bb057f3ba5584446bffb65

[domenic, 2017-04-06 05:31:53]

domenic@chromium.org changed reviewers:
+ jochen@chromium.org

[jochen (gone - plz use gerrit), 2017-04-06 09:58:35]

lgtm

[domenic, 2017-04-06 10:07:12]

The CQ bit was checked by domenic@chromium.org

[commit-bot: I haz the power, 2017-04-06 10:07:29]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-04-06 11:19:53]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1491473232340810, "parent_rev":
"8deebddfd6875aa12740eb2060a3e3f760116ea5", "commit_rev":
"1957a5e6746fa96d51bb057f3ba5584446bffb65"}

[commit-bot: I haz the power, 2017-04-06 11:20:39]

Description was changed from

==========
Remove now-redundant promise rejection event tests

These tests were upstreamed to web-platform-tests in
https://github.com/w3c/web-platform-tests/pull/2388. Several
Chromium-specific tests remain but the ones deleted in this commit are
redundant with the versions now found in
third_party/WebKit/LayoutTests/external/wpt/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/.

BUG=702025
==========

to

==========
Remove now-redundant promise rejection event tests

These tests were upstreamed to web-platform-tests in
https://github.com/w3c/web-platform-tests/pull/2388. Several
Chromium-specific tests remain but the ones deleted in this commit are
redundant with the versions now found in
third_party/WebKit/LayoutTests/external/wpt/html/webappapis/scripting/processing-model-2/unhandled-promise-rejections/.

BUG=702025

Review-Url: https://codereview.chromium.org/2798273002
Cr-Commit-Position: refs/heads/master@{#462422}
Committed:
https://chromium.googlesource.com/chromium/src/+/1957a5e6746fa96d51bb057f3ba5...
==========

[commit-bot: I haz the power, 2017-04-06 11:20:42]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/1957a5e6746fa96d51bb057f3ba5...