Build and run crypto_unittests on Fuchsia bots

Bug: 731302
Change-Id: Ie1f9ae4a7e950d5541a37f4e35f83e84df2733e2
Reviewed-on: https://chromium-review.googlesource.com/576407
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#487936}

testing/buildbot/chromium.fyi.json

@@ -10022,6 +10022,12 @@
         },
         "test": "base_unittests"
       },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": false
+        },
+        "test": "crypto_unittests"
+      },
       {
         "args": [
           "--test-launcher-filter-file=../../testing/buildbot/filters/fuchsia.ipc_tests.filter"
@@ -10108,6 +10114,12 @@
         },
         "test": "base_unittests"
       },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": false
+        },
+        "test": "crypto_unittests"
+      },
       {
         "args": [
           "--test-launcher-filter-file=../../testing/buildbot/filters/fuchsia.ipc_tests.filter"