Report unknown swap error as EGL_BAD_MATCH. EGL_BAD_NATIVE_WINDOW is exclusively for indicating that the native window handle is invalid. Since we're seeing this error on switches between full-screen and windowed, EGL_BAD_MATCH seems like a better fit. BUG=361553 Change-Id: If0e2c4e5efd90838629b2769f20fcffdad4c30a9 Reviewed-on: https://chromium-review.googlesource.com/195363 Tested-by: Nicolas Capens <nicolascapens@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org>