Move VR tests to separate APK

testing/buildbot/chromium.fyi.json

 {
   "Android Asan Builder Tests (dbg)": {
     "gtest_tests": [
       {
         "args": [
           "--tool=asan"
         ],
         "swarming": {
           "can_use_on_swarming_builders": false
         },
@@ skipping 212 matching lines @@
     "gtest_tests": [
       {
         "swarming": {
           "can_use_on_swarming_builders": false
         },
         "test": "vr_shell_unittests"
       }
     ],
     "instrumentation_tests": [
       {
-        "args": [
-          "--test-filter",
-          "VrShellTest#*"
-        ],
-        "test": "chrome_public_test_apk"
+        "test": "chrome_public_test_vr_apk"

[sky, 2017/01/26 22:43:37]

I believe you need to update /testing/buildbot/gn_isolate_map.pyl too.

       }
     ]
   },
   "Browser Side Navigation Linux": {
     "gtest_tests": [
       {
         "args": [
           "--enable-browser-side-navigation",
           "--test-launcher-retry-limit=6"
         ],
@@ skipping 12465 matching lines @@
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "views_unittests"
       }
     ]
   }
 }