testing/buildbot: Use vivid for capture_unittests on ChromeOS VM in CQ

Load vivid before running capture_unittests on chromeos-amd64-generic-rel.
This makes it possible to run test cases that require a webcam.

Bug: 852302, 904730
Change-Id: I5d4f5a1dd7a8ea27ef7eabd438fd766621573096
Signed-off-by: Keiichi Watanabe <keiichiw@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/1282424Reviewed-by: Ben Pastene <bpastene@chromium.org>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608688}

build/chromeos/run_vm_test.py

@@ -257,6 +257,13 @@ class GTestTest(RemoteTest):
               vpython_spec_path),
       ])
 
+    # Load vivid before running capture_unittests
+    # TODO(crbug.com/904730): Once we start loading vivid in init service,
+    # we can remove this code.
+    if self._test_exe == 'capture_unittests':
+      vm_test_script_contents.append(
+          'echo "test0000" | sudo -S modprobe vivid n_devs=1 node_types=0x1')
+
     test_invocation = (
         './%s --test-launcher-shard-index=%d '
         '--test-launcher-total-shards=%d' % (

testing/buildbot/chromium.chromiumos.json

@@ -51,7 +51,7 @@
       {
         "args": [
           "--test-launcher-jobs=1",
-          "--gtest_filter=-*UsingRealWebcam*"
+          "--gtest_filter=-*UsingRealWebcam_CaptureMjpeg*"
         ],
         "swarming": {
           "can_use_on_swarming_builders": true,

testing/buildbot/test_suites.pyl

@@ -371,9 +371,9 @@
       'capture_unittests': {
         'args': [
           '--test-launcher-jobs=1',
-          # TODO(crbug.com/881300): After capture_unittests passes with vivid on VM,
-          # we can run UsingRealWebcam tests except CaptureMjpeg.
-          '--gtest_filter=-*UsingRealWebcam*',
+          # Don't run CaptureMJpeg tests on ChromeOS VM because vivid,
+          # which is the virtual video capture device, doesn't support MJPEG.
+          '--gtest_filter=-*UsingRealWebcam_CaptureMjpeg*',
         ],
       },
       'cc_unittests': {},