https://bugs.webkit.org/show_bug.cgi?id=47701

Reviewed by David Levin.

WebCore:

Test cases have been added to read-blob-test-cases.js.

* fileapi/BlobBuilder.cpp:
(WebCore::BlobBuilder::getBuffer):
(WebCore::BlobBuilder::append): Removed bool return values since they
weren't used.
* fileapi/BlobBuilder.h:
* fileapi/BlobBuilder.idl:

LayoutTests:

* fast/files/read-blob-async-expected.txt:
* fast/files/resources/read-blob-test-cases.js:
(testReadingSingleArrayBufferBlob):
(testReadingSlicedArrayBufferBlob):
(testReadingMultipleArrayBufferBlob):
(testReadingHybridBlob):
(testReadingSlicedHybridBlob):
(testReadingTripleSlicedHybridBlob):
* fast/files/workers/worker-read-blob-async-expected.txt:
* fast/files/workers/worker-read-blob-sync-expected.txt:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@70488 268f45cc-cd09-0410-ab3c-d52691b4dbfc