Revert "Disable blink_common_unittests on Fuchsia FYI bot"

This reverts commit c73d58a9.

Reason for revert: the tests should pass now.

Original change's description:
> Disable blink_common_unittests on Fuchsia FYI bot
> 
> Some tests are consistently failing
> 
> TBR=jbudorick@chromium.org
> 
> Bug: 934582, 928459
> Change-Id: I405cc5093bb0e28694e332b4a546133507ae94c7
> Reviewed-on: https://chromium-review.googlesource.com/c/1482116
> Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#634730}

TBR=sergeyu@chromium.org,jbudorick@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 934582, 928459
Change-Id: I25a4c2f29db4bd6614374e48c2ff1464bf08a333
Reviewed-on: https://chromium-review.googlesource.com/c/1493258Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Commit-Queue: Sergey Ulanov <sergeyu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#636313}

testing/buildbot/chromium.fyi.json

@@ -3932,6 +3932,17 @@
         },
         "test": "base_unittests"
       },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "kvm": "1"
+            }
+          ]
+        },
+        "test": "blink_common_unittests"
+      },
       {
         "swarming": {
           "can_use_on_swarming_builders": true,

testing/buildbot/test_suite_exceptions.pyl

@@ -59,7 +59,6 @@
     'remove_from': [
       # chromium.linux
       'Fuchsia x64',
-      'fuchsia-fyi-x64-dbg',  # https://crbug.com/934582
     ],
   },
   'blink_heap_unittests': {