Steps to reproduce the problem:
The issue is the limitation of 1% of physical memory when attempting to upload a Blob using FormData and XMLHttpRequest.
Such limitation on modern smartphones, often with RAM amount comparable to that of PCs, doesn't make much sense and ends up preventing some legitimate uses.
As this is a Chromium limitation specific to Android not shared by other browsers or even by Chrome itself when used on other operating systems, it would be nice to either harmonise it with the other builds (limit of 20%) or provide some proprietary JavaScript hook to get rid of it.

What is the expected behavior?
Expected behaviour is no error regardless of the file size or, at least, only when physical memory is actually too low to continue rather than guesstimating that 1% is too much.

What went wrong?
When uploading using XMLHttpRequest a misleading ERR_FILE_NOT_FOUND error is thrown, caused by a 1% of physical memory limit on Chrome for Android, which has no match on other Chrome builds, which in fact have much higher limits.

Did this work before? No 

Does this work in other browsers? Yes

Chrome version: 63.0.3239.132  Channel: stable
OS Version: Any
Flash Version: