Revert of Convert webkit_unit_tests to run exclusively on Swarming

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 dc03ebc0459d64b3530932ed48642f96bfc8d3fe..27a5cec662f1ce23547c82d499cf64205f154f2b 100644
--- a/testing/buildbot/chromium.fyi.json
+++ b/testing/buildbot/chromium.fyi.json
@@ -831,9 +831,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -1009,9 +1006,6 @@
         "test": "url_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -1206,9 +1200,6 @@
         "test": "url_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -1412,9 +1403,6 @@
         "test": "url_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -1594,9 +1582,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -1758,9 +1743,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -1922,9 +1904,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -2086,9 +2065,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -2250,9 +2226,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -2426,9 +2399,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -3160,9 +3130,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -3324,9 +3291,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -3488,9 +3452,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -3652,9 +3613,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -3791,9 +3749,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -3955,9 +3910,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {
@@ -4119,9 +4071,6 @@
         "test": "views_unittests"
       },
       {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "webkit_unit_tests"
       },
       {