[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 961bfebee4bbed86facd77e27febd7a188ba2640..d17ec107a281ad92227d44a8919c8d91956bdc90 100644
--- a/testing/buildbot/chromium.win.json
+++ b/testing/buildbot/chromium.win.json
@@ -409,12 +409,6 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
-        "test": "sync_unit_tests"
-      },
-      {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "ui_base_unittests"
       },
       {
@@ -857,12 +851,6 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
-        "test": "sync_unit_tests"
-      },
-      {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "ui_base_unittests"
       },
       {
@@ -1342,12 +1330,6 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
-        "test": "sync_unit_tests"
-      },
-      {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "ui_base_unittests"
       },
       {
@@ -1738,12 +1720,6 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
-        "test": "sync_unit_tests"
-      },
-      {
-        "swarming": {
-          "can_use_on_swarming_builders": true
-        },
         "test": "ui_base_unittests"
       },
       {