[GTK][Win] fast/forms/input-autofilled.html is failing

[Miguel Gomez]

Failing since r225879 with this diff

-PASS 
+FAIL Foreground color did not change when autofilled.

[Daniel Bates]

The test is also failing with the same diff on the Apple Windows bots. For some reason the test does not fail on Mac or iOS (why?).

[Daniel Bates]

Apple Win 7 Release (Tests) bot:
<https://build.webkit.org/results/Apple%20Win%207%20Release%20(Tests)/r225903%20(3462)/fast/forms/input-autofilled-diff.txt>

GTK Linux 64-bit Release (Tests) bot:
<https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20(Tests)/r225888%20(4680)/fast/forms/input-autofilled-diff.txt>

[Daniel Bates]

With help from Alex Christensen, I was able to get a WebKit setup on GTK with a clean build of WebKit and the test case fast/forms/input-autofilled.html passes. We should look to force a clean build on both the GTK and Windows bots.

[Michael Catanzaro]

It started passing on the bot in the range r226741-r226750 (inclusive). But two other autofill tests began failing at the same time, see bug #181662.

I don't know what changed, and none of the commits in that range look suspicious. It's common for a test failure to not be reproducible locally, and it would be quite unusual for a clean build to change tests results, but I suppose it is possible if there is an unusual error in the build system.