Adding new test conditions for WebGL should be simpler It should be simpler to add test runner functions that change the environment so that some particular behaviour can be tested. Example: bug 222546 needs to add a new flag telling the implementation to timeout calls to GPU Process. Current problems: - non-uniform names makes it hard to understand what part of the code is to support testing and what is not - many separate, non-uniform functions make it hard to catch all the functions which need to be disabled in non-test environments but enabled in normal operation - due to current WebGL graphics context implementation being separated in many hard-to-understand **GraphicsContextGL**.cpp/h files in various ports, it is hard to add a function correctly to all platforms.