100 failing tests in latest Chrome

[mramato]

Yesterday, Chrome released 29.0.1547.57 on all platforms and Cesium has 100 failing tests using it. The first failure is Renderer/AutomaticUniforms can declare automatic uniforms. 90 of the failures are at the Renderer level, with the rest in Scene.

This may be related to #1002, because I see some matrix failures as well.

Thankfully, Viewer and the few Sandcastle examples I tried seem to work; but we should still investigate this and get it fixed ASAP since god knows what else is broken (and we can't validate new code if the tests all fail).

CC @pjcozzi @bagnell @emackey

[pjcozzi]

Bummer. We'll look at it now.

[pjcozzi]

With the same version of Chrome, these aren't on Mac, but there are a few other failures that we'll look at. See #1048

I can reproduce these on Windows and will continue looking.

[pjcozzi]

I figured out at least some of the failures. The automatic uniforms are not being optimized out, which is crazy to me. #1031 will fix it (CC @gbeatty), but I'll put something smaller in now.

[mramato]

This release of Chrome may include a newly upgraded ANGLE, (I'm not sure if it was scheduled for 29 or 30), maybe there's a regression with it. On a side note, they are also going to switch from a DX9 backend to DX11 in Chrome 30 or 31, so that will be interesting to see as well.