Based on feedback from Guillaume Abadie on public_webgl, removed invalid call of "isVertexArrayOES()" from oes-vertex-array-object test, as far back as version 1.0.1 of the conformance suite.
Merge pull request #306 from kenrussell/vao-test

Based on feedback from Guillaume Abadie on public_webgl, removed invalid...
Fix checkCanvas utility function JSDoc to correspond to what it does
Merge pull request #307 from NVIDIA/fix-utils-check

Fix checkCanvas utility function JSDoc to correspond to what it does