Isolate device_unittests.

testing/buildbot/chromium.fyi.json

Index: testing/buildbot/chromium.fyi.json
diff --git a/testing/buildbot/chromium.fyi.json b/testing/buildbot/chromium.fyi.json
index 3e35b386cbe2617c9d79a8f3f23118ba6531eb49..3c94fb3ba8c771197a712b0ff3d54911078dbb1b 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -237,6 +237,9 @@
         "test": "dbus_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -407,6 +410,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -882,6 +888,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -1013,6 +1022,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -1144,6 +1156,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -1275,6 +1290,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -1406,6 +1424,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -1537,6 +1558,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -1670,6 +1694,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -1812,6 +1839,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -1952,6 +1982,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -2083,6 +2116,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -2214,6 +2250,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -2345,6 +2384,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -2457,6 +2499,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -2582,6 +2627,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -2713,6 +2761,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -2883,6 +2934,9 @@
         "test": "dbus_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {
@@ -3288,6 +3342,9 @@
         "test": "dbus_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "device_unittests"
       },
       {