Update failing WebGL tests list.

Change-Id: Ib141eaebe14a6bf80efa2bcdfec3371ac1a59b09
Reviewed-on: https://chromium-review.googlesource.com/254062
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/tests/WebGL-CTS-known-failures.txt b/tests/WebGL-CTS-known-failures.txt
index 1da2e8a..5e8b9cf 100644
--- a/tests/WebGL-CTS-known-failures.txt
+++ b/tests/WebGL-CTS-known-failures.txt
@@ -1,10 +1,6 @@
 Known failures in the WebGL CTS 1.0.4, top of tree, using Chromium
 https://www.khronos.org/registry/webgl/sdk/tests/webgl-conformance-tests.html
 
-conformance/context/user-defined-properties-on-context.html: 1 tests failed
-conformance/extensions/ext-frag-depth.html: 1 tests failed
-conformance/extensions/ext-shader-texture-lod.html: 1 tests failed
-conformance/extensions/oes-standard-derivatives.html: 1 tests failed
 conformance/glsl/bugs/pow-of-small-constant-in-user-defined-function.html: 1 tests failed
 conformance/glsl/bugs/sampler-struct-function-arg.html: 1 tests failed
 conformance/glsl/misc/const-variable-initialization.html: 207 tests failed