Run native_theme unittests everywhere we run views_unittests.

testing/buildbot/chromium.full.json

Index: testing/buildbot/chromium.full.json
diff --git a/testing/buildbot/chromium.full.json b/testing/buildbot/chromium.full.json
index 45b40bf8a019c7fffcae8d1913853f7ce086c5af..8fe2748923deecac77d173ee2564ac2acd5564ae 100644
--- a/testing/buildbot/chromium.full.json
+++ b/testing/buildbot/chromium.full.json
@@ -217,6 +217,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "native_theme_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "net_unittests"
       },
       {
@@ -522,6 +528,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "native_theme_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "net_unittests"
       },
       {
@@ -782,6 +794,12 @@
       },
       {
         "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "native_theme_unittests"
+      },
+      {
+        "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 4
         },