The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1957a5e6746fa96d51bb057f3ba5584446bffb65

commit 1957a5e6746fa96d51bb057f3ba5584446bffb65
Author: domenic <domenic@chromium.org>
Date: Thu Apr 06 11:19:49 2017

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}

[delete] https://crrev.com/8deebddfd6875aa12740eb2060a3e3f760116ea5/third_party/WebKit/LayoutTests/fast/dom/promise-rejection-events-attached-in-event-expected.txt
[delete] https://crrev.com/8deebddfd6875aa12740eb2060a3e3f760116ea5/third_party/WebKit/LayoutTests/fast/dom/promise-rejection-events-attached-in-event.html
[delete] https://crrev.com/8deebddfd6875aa12740eb2060a3e3f760116ea5/third_party/WebKit/LayoutTests/fast/dom/promise-rejection-events-onerror.html
[delete] https://crrev.com/8deebddfd6875aa12740eb2060a3e3f760116ea5/third_party/WebKit/LayoutTests/fast/events/constructors/promise-rejection-event-constructor.html
[delete] https://crrev.com/8deebddfd6875aa12740eb2060a3e3f760116ea5/third_party/WebKit/LayoutTests/http/tests/dom/promise-rejection-events-expected.txt
[delete] https://crrev.com/8deebddfd6875aa12740eb2060a3e3f760116ea5/third_party/WebKit/LayoutTests/http/tests/dom/promise-rejection-events.html
[delete] https://crrev.com/8deebddfd6875aa12740eb2060a3e3f760116ea5/third_party/WebKit/LayoutTests/http/tests/dom/resources/promise-rejection-events.js