https://bugs.webkit.org/show_bug.cgi?id=48163

Reviewed by David Levin.

WebCore:

Test: fast/files/file-reader-abort.html

* fileapi/FileReader.cpp:
(WebCore::delayedAbort):
(WebCore::FileReader::abort): Schedule to do the abort later to work
around the case that abort() could be called from event handler.
(WebCore::FileReader::doAbort):
(WebCore::FileReader::didFail): Do not go with normal error handling
when we are in the process of aborting.
(WebCore::FileReader::failed):
(WebCore::FileReader::readyState):
* fileapi/FileReader.h:

LayoutTests:

* fast/files/file-reader-abort-expected.txt: Added.
* fast/files/file-reader-abort.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@70484 268f45cc-cd09-0410-ab3c-d52691b4dbfc