Mark two tests as [ Pass Failure ] to unblock wpt import

These tests failed to pass CQ here:
https://chromium-review.googlesource.com/c/chromium/src/+/1820857/
https://ci.chromium.org/p/chromium/builders/try/linux-rel/198937

TBR=lukasza,alexmos

Bug: 1007228
Bug: 1007229
Change-Id: If8ac51779c823ff1db57ac3069075c91d58e9825
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1821481Reviewed-by: Philip Jägenstedt <foolip@chromium.org>
Commit-Queue: Philip Jägenstedt <foolip@chromium.org>
Cr-Commit-Position: refs/heads/master@{#699310}

third_party/blink/web_tests/TestExpectations

@@ -84,6 +84,8 @@ crbug.com/901502 http/tests/devtools/oopif/oopif-storage.js [ Pass Failure ]
 crbug.com/906879 http/tests/inspector-protocol/network/navigation-blocking-xorigin-iframe.js [ Pass Failure ]
 crbug.com/949003 http/tests/printing/cross-site-frame-scrolled.html [ Pass Failure ]
 crbug.com/949003 http/tests/printing/cross-site-frame.html [ Pass Failure ]
+crbug.com/1007228 external/wpt/fullscreen/api/element-request-fullscreen-and-move-to-iframe-manual.html [ Pass Failure ]
+crbug.com/1007229 external/wpt/intersection-observer/same-origin-grand-child-iframe.sub.html [ Pass Failure ]
 # ====== Site Isolation failures until here ======
 
 # ====== Oilpan-only failures from here ======

third_party/blink/web_tests/platform/mac/external/wpt/fullscreen/api/element-request-fullscreen-and-move-to-iframe-manual-expected.txt

-This is a testharness.js-based test.
-Harness Error. harness_status.status = 1 , harness_status.message = fullscreen error
-PASS Element#requestFullscreen() followed by moving the element into an iframe
-Harness: the test ran to completion.
-