commit 08baca7729d4a91e5cf693bd0eda13d80b8b7a5a
author Hiroki Nakagawa <nhiroki@chromium.org> Wed Nov 21 12:31:18 2018
committer Commit Bot <commit-bot@chromium.org> Wed Nov 21 12:31:18 2018
tree 4df3a71b7deddd3a0a7f4b614a8cf9163ccd1c6e
parent b1101c25681c2051acda608febe69fa2913291eb

Worker: Throw an original Error on importScripts() failure

Before this CL, when a failure on importScripts() happens,
WorkerOrWorkletScriptController::RethrowExceptionFromImportedScript() creates a
new Error and throws it instead of an original Error. This fails web platform
tests:
https://wpt.fyi/results/workers/interfaces/WorkerUtils/importScripts/004.html?label=stable&aligned
https://wpt.fyi/results/workers/interfaces/WorkerUtils/importScripts/006.html?label=stable&aligned

This CL makes the function throw the original Error.

In addition, this CL changes ErrorEvent::CreateSanitizedError() to create a
sanitized error with a null error object instead of an empty error object. This
is because the HTML spec requires the error object for scripts whose errors are
muted must be null, and ExceptionState::RethrowV8Exception() called from
RethrowExceptionFromImportedScript() doesn't throw an exception when its error
object is empty.

Bug: 651778, 655458
Change-Id: I67a91879b4a9fa3fd521797394fe35de89634b7a
Reviewed-on: https://chromium-review.googlesource.com/c/1343465
Commit-Queue: Hiroki Nakagawa <nhiroki@chromium.org>
Reviewed-by: Hiroshige Hayashizaki <hiroshige@chromium.org>
Reviewed-by: Kouhei Ueno <kouhei@chromium.org>
Reviewed-by: Kentaro Hara <haraken@chromium.org>
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Reviewed-by: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610011}