Add two new webxr failures to WptOverrideExpectations

TBR=robertma

Change-Id: Icd82857de549cb4f6812f172b749adce6bdda4a9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2015347Reviewed-by: Luke Z <lpz@chromium.org>
Commit-Queue: Luke Z <lpz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#734174}

third_party/blink/web_tests/WPTOverrideExpectations

@@ -918,6 +918,7 @@ crbug.com/1033611 external/wpt/webxr/gamepads-module/xrInputSource_gamepad_input
 crbug.com/1033611 external/wpt/webxr/getInputPose_handedness.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/getInputPose_pointer.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/getViewerPose_emulatedPosition.https.html [ Failure ]
+crbug.com/1033611 external/wpt/webxr/hit-test/ar_hittest_subscription_refSpaces.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/navigator_xr_sameObject.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/render_state_vertical_fov_immersive.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/render_state_vertical_fov_inline.https.html [ Failure ]
@@ -941,6 +942,7 @@ crbug.com/1033611 external/wpt/webxr/xrDevice_supportsSession_immersive.https.ht
 crbug.com/1033611 external/wpt/webxr/xrDevice_supportsSession_immersive_unsupported.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/xrDevice_supportsSession_non_immersive.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/xrFrame_getPose.https.html [ Failure ]
+crbug.com/1033611 external/wpt/webxr/xrFrame_getViewerPose_getPose.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/xrFrame_lifetime.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/xrFrame_session_sameObject.https.html [ Failure ]
 crbug.com/1033611 external/wpt/webxr/xrInputSource_add_remove.https.html [ Failure ]