Add VR instrumentation tests to FYI bot

testing/buildbot/chromium.fyi.json

 {
   "Android Asan Builder Tests (dbg)": {
     "gtest_tests": [
       {
         "args": [
           "--tool=asan"
         ],
         "swarming": {
           "can_use_on_swarming_builders": false
         },
@@ skipping 876 matching lines @@
     ]
   },
   "Android VR Tests": {
     "gtest_tests": [
       {
         "swarming": {
           "can_use_on_swarming_builders": false
         },
         "test": "vr_shell_unittests"
       }
+    ],
+    "instrumentation_tests": [
+      {
+        "args": [
+          "--test-filter",

[ncarter (slow), 2016/11/28 23:56:23]

Is this supposed to be gtest_filter ?

The only reference to 'test-filter' I see in the code is
build/android/test_runner.py

[bsheedy, 2016/11/29 00:11:54]

It's meant to be passed directly to the generated binary file that runs the
instrumentation test, which I believe is based off build/android/test_runner.py.
In this case, it's run_chrome_public_test_apk (see
https://build.chromium.org/p/chromium.android/builders/Lollipop%20Tablet%20Te...).

When run locally, you can call "run_chrome_public_test_apk --test-filter
VrShellTest#*" to only run the tests in VrShellTest.java, and the way args
support was added to tests under instrumentation_tests, ["--test-filter",
"VrShellTest#*"] should result in "run_chrome_public_test_apk --test-filter
VrShellTest#*" being called on the builder. See
https://chromium.googlesource.com/chromium/tools/build.git/+/ec0cd54e792581bb...
for the CL where args support was added to instrumentation_tests.

+          "VrShellTest#*"
+        ],
+        "test": "chrome_public_test_apk"
+      }
     ]
   },
   "Android x64 Tests": {
     "gtest_tests": [
       {
         "swarming": {
           "can_use_on_swarming_builders": false
         },
         "test": "angle_unittests"
       },
@@ skipping 12258 matching lines @@
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "views_unittests"
       }
     ]
   }
 }