1353546 - WebExtensions API downloads.download saveAs is buggy

Status: RESOLVED DUPLICATE of bug 1318564

(WebExtensions :: Untriaged, defect)

Description

[pirmin_g]

Attachment: WebExtension, Chrome Extension

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:52.0) Gecko/20100101 Firefox/52.0
Build ID: 20170323105023

Steps to reproduce:

In a WebExtension I wanted to save a data URL of a PNG image using the downloads API.

In Firefox I got an exception where in Google Chrome it was working as expected.

As a workaround for Firefox I converted the data URL to a Blob before saving.
This way Firefox lets save the image but still throws an exception.

I was using:
- Firefox Developer Edition 54.0a2 (2017-04-04) (32-Bit)
- Google Chrome Version 57.0.2987.133 (64-bit)



Actual results:

Firefox throws an exception (see details in comments of the attached sources).
Google Chrome works well.


Expected results:

Open a "Save as" Dialog and saving the image.

Comment 1

[pirmin_g]

I forgot to mention, related Bugs are 1271345 and 1287347 which both are resolved.