Revert of [Sync] Merge sync_unit_tests into components_unit_tests.

testing/buildbot/chromium.win.json

Index: testing/buildbot/chromium.win.json
diff --git a/testing/buildbot/chromium.win.json b/testing/buildbot/chromium.win.json
index d17ec107a281ad92227d44a8919c8d91956bdc90..961bfebee4bbed86facd77e27febd7a188ba2640 100644
--- a/testing/buildbot/chromium.win.json
+++ b/testing/buildbot/chromium.win.json
@@ -404,6 +404,12 @@
           "can_use_on_swarming_builders": true
         },
         "test": "sync_integration_tests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "sync_unit_tests"
       },
       {
         "swarming": {
@@ -851,6 +857,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "sync_unit_tests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "ui_base_unittests"
       },
       {
@@ -1330,6 +1342,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "sync_unit_tests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "ui_base_unittests"
       },
       {
@@ -1715,6 +1733,12 @@
           "shards": 2
         },
         "test": "sync_integration_tests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "sync_unit_tests"
       },
       {
         "swarming": {