Fix up EGLSurfaceTest. * removes the SwapInterval test. This test was not really based on spec language. SwapInterval is highly os-dependent so likely a robust test would include some OS-specific logic instead of timing. * give the pbuffer surface non-zero dimensions. this fixes an uncaught error on Windows and may give better results. * lifts a couple Android suppression possibly related to the pbuffer bug. a couple tests still fail. Bug: angleproject:3123 Bug: angleproject:3162 Change-Id: I68e4e943b94d17777704bbe3b8ae7e646fc9c54d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2082131 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>