Alok Priyadarshi has recently rewritten the preprocessor in the ANGLE shader translator, and the rewrite has turned up a bug in the fast/canvas/webgl/glsl-conformance.html test of vshaderWithLineDirective. The test assumes that the error will occur on line 124, but according to the GLSL ES specification it should occur on line 123. I am going to update the test to be correct and skip it on the majority of platforms. As ANGLE is updated in various ports to pick up the new preprocessor, the test can be enabled again.
It turns out that this test is invalid (it is making assertions about the GLSL compiler's output not guaranteed by the spec). It's been removed from the WebGL conformance suite; we can just remove the test.
Created attachment 151529 [details] Patch
Comment on attachment 151529 [details] Patch R=me. Looks fine to me, but sad that the spec isn't testable. :(
Created attachment 151537 [details] Patch for landing
Comment on attachment 151537 [details] Patch for landing Clearing flags on attachment: 151537 Committed r122281: <http://trac.webkit.org/changeset/122281>
All reviewed patches have been landed. Closing bug.