Tom Ritter 1547955e11 Bug 1878716: Add a test that compares the canvases between a parent and child r=timhuang
For the first test, the parent is a page and the child is an iframe, but
eventually we will have tests for lots of different children types.

We test that the number of pixels we expect to be randomized are, and
we also compare the differences between the parent and child.

This allows us to ensure that the FPP key is being propagated correctly.

Differential Revision: https://phabricator.services.mozilla.com/D205917
2024-05-02 13:55:40 +00:00

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