Fix uploaded image orientation in some browsers #13493
Merged
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Some browsers (at least recent Chrome versions) automatically take
image metadata into account when drawing images into a canvas.
There seem to be no way to prevent that behavior, and the only
way to detect it seems to compare with a known image.
See: w3c/csswg-drafts#4666
Solution adapted from: blueimp/JavaScript-Load-Image@1e4df70 (my understanding is that it's fine for us to reuse that code this way, it being licensed under MIT, but tagging @blueimp nevertheless just in case)