Reject getDisplayMedia calls without user activation

This CL makes sure getDisplayMedia() returned promise reject with
InvalidStateError when called without user activation.
Note that speculation rules tests are removed as well[1].

[1] WICG/nav-speculation#225

Intent to remove: https://groups.google.com/a/chromium.org/g/blink-dev/c/YGmuAVOqftI

Bug: 1198918
Change-Id: I530761d95e6db412582d0f19c0170803516c33f7

mediacapture-streams/MediaStreamTrack-iframe-audio-transfer.https.html

@@ -2,9 +2,12 @@
 <title>MediaStreamTrack transfer to iframe</title>
 <script src=/resources/testharness.js></script>
 <script src=/resources/testharnessreport.js></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
 <script>
 promise_test(async () => {
   const iframe = document.createElement("iframe");
+  await test_driver.bless('getDisplayMedia');
   const stream = await navigator.mediaDevices.getDisplayMedia({audio:true, video: true});
   const track = stream.getAudioTracks()[0];
   const cloned_track = track.clone();

mediacapture-streams/MediaStreamTrack-iframe-transfer.https.html

@@ -2,9 +2,12 @@
 <title>MediaStreamTrack transfer to iframe</title>
 <script src=/resources/testharness.js></script>
 <script src=/resources/testharnessreport.js></script>
+<script src="/resources/testdriver.js"></script>
+<script src="/resources/testdriver-vendor.js"></script>
 <script>
 promise_test(async () => {
   const iframe = document.createElement("iframe");
+  await test_driver.bless('getDisplayMedia');
   const stream = await navigator.mediaDevices.getDisplayMedia({video: true});
   const track = stream.getVideoTracks()[0];
   const cloned_track = track.clone();