WebLayer: Enable passing remote playback WPT tests.

Bug: 1057100
Change-Id: I1e69334805631fb697d35ef05d611921dc81854b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518138
Commit-Queue: Evan Stade <estade@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Auto-Submit: Evan Stade <estade@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823821}

third_party/blink/web_tests/android/WeblayerWPTExpectations

@@ -3961,12 +3961,6 @@ crbug.com/1050754 external/wpt/referrer-policy/generic/inheritance/iframe-inheri
 crbug.com/1050754 external/wpt/referrer-policy/generic/inheritance/iframe-inheritance-javascript.html [ Failure Pass ]
 crbug.com/1050754 external/wpt/referrer-policy/generic/multiple-headers-one-invalid.html [ Failure ]
 crbug.com/1050754 external/wpt/referrer-policy/generic/unsupported-csp-referrer-directive.html [ Failure ]
-crbug.com/1050754 external/wpt/remote-playback/cancel-watch-availability.html [ Failure Pass ]
-crbug.com/1050754 external/wpt/remote-playback/disable-remote-playback-cancel-watch-availability-throws.html [ Failure Pass ]
-crbug.com/1050754 external/wpt/remote-playback/disable-remote-playback-prompt-throws.html [ Failure Pass ]
-crbug.com/1050754 external/wpt/remote-playback/disable-remote-playback-watch-availability-throws.html [ Failure Pass ]
-crbug.com/1050754 external/wpt/remote-playback/idlharness.window.html [ Failure Pass ]
-crbug.com/1050754 external/wpt/remote-playback/watch-availability-initial-callback.html [ Failure Pass ]
 crbug.com/1050754 external/wpt/reporting/bufferSize.html [ Pass Timeout ]
 crbug.com/1050754 external/wpt/reporting/idlharness.any.html [ Failure Pass ]
 crbug.com/1050754 external/wpt/reporting/idlharness.any.worker.html [ Failure Pass ]