Reland "EGL: Implement EGL_KHR_no_config_context" Add extension string and flag to all renderers that pass Modify eglCreateContext to accept EGL_NO_CONFIG Modify eglQueryContext per specification Modify eglMakeCurrent to bypass surface-context config compatibility checks Add check for client API Create new end2end test EGLNoConfigContextTest Disable on most renderers to prevent possible fail with future configs Bug: angleproject:3635 Test: dEQP-EGL.functional.create_context.no_config* angle_end2end_tests --gtest_filter=EGLNoConfigContextTest* Change-Id: I88c1922a1e75afcc49922a9eccb4f1ae046c024a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1806140 Commit-Queue: Mohan Maiya <m.maiya@samsung.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>