Disable recently added W3C EME tests

These new tests require a DRM sytem that isn't available to content_shell,
so they can't be run.

BUG=818254

Change-Id: I228864c991a452c86c465e388b03366fac0d7f12
Reviewed-on: https://chromium-review.googlesource.com/947564
Reviewed-by: Robert Ma <robertma@chromium.org>
Reviewed-by: Xiaohan Wang <xhwang@chromium.org>
Commit-Queue: John Rummell <jrummell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#540719}

third_party/WebKit/LayoutTests/NeverFixTests

@@ -312,6 +312,8 @@ external/wpt/encrypted-media/drm-mp4-playback-temporary-multikey.https.html [ Wo
 external/wpt/encrypted-media/drm-mp4-playback-temporary-multikey-sequential.https.html [ WontFix ]
 external/wpt/encrypted-media/drm-mp4-playback-temporary-multikey-sequential-readyState.https.html [ WontFix ]
 external/wpt/encrypted-media/drm-mp4-playback-temporary-multisession.https.html [ WontFix ]
+external/wpt/encrypted-media/drm-mp4-playback-temporary-playduration-keystatus.html [ WontFix ]
+external/wpt/encrypted-media/drm-mp4-playback-temporary-playduration.html [ WontFix ]
 external/wpt/encrypted-media/drm-mp4-playback-temporary-setMediaKeys-after-src.https.html [ WontFix ]
 external/wpt/encrypted-media/drm-mp4-playback-temporary-setMediaKeys-after-update.https.html [ WontFix ]
 external/wpt/encrypted-media/drm-mp4-playback-temporary-setMediaKeys-immediately.https.html [ WontFix ]