chromeos: enables more tests for Mash

As part of https://chromium-review.googlesource.com/c/chromium/src/+/1183892
I wired up what was OutputProtection. That means these tests now pass.

BUG=678687
TEST=test only change

Change-Id: Ie68291b08973953e5d3d238ce87bb6d552a1b50e
Reviewed-on: https://chromium-review.googlesource.com/1185908Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Scott Violet <sky@chromium.org>
Cr-Commit-Position: refs/heads/master@{#585305}

testing/buildbot/filters/mash.browser_tests.filter

@@ -163,12 +163,6 @@
 # Crashes in pre-login phase, probably MagnificationManager not created.
 -MagnificationManagerTest.*
 
-# OutputProtection problems:
-# interface_endpoint_client.cc(32) Check failed: !is_valid. The callback passed to OutputProtection::QueryStatus() was never run.
-# binder_registry.h(89) Failed to locate a binder for interface: display::mojom::OutputProtection
--*ECKEncryptedMediaTest.OutputProtectionTest*
--OutOfProcessPPAPITest.*
-
 # ash::FocusRingController::SetVisible() from LoginDisplayHostWebUI.
 -MultiAuthEnrollmentScreenTest.*
 -ProvisionedEnrollmentScreenTest.*