Revert of [Sync] Merge sync_unit_tests into components_unit_tests.

testing/buildbot/chromium.linux.json

 {
   "Android Arm64 Builder (dbg)": {
     "additional_compile_targets": [
       "all"
     ]
   },
   "Android Builder": {
     "additional_compile_targets": [
       "cronet_test_instrumentation_apk",
       "system_webview_apk"
@@ skipping 496 matching lines @@
             {
               "android_devices": "4",
               "device_os": "KTU84P",
               "device_type": "hammerhead"
             }
           ]
         },
         "test": "sql_unittests"
       },
       {
+        "override_isolate_target": "sync_unit_tests",
+        "swarming": {
+          "can_use_on_swarming_builders": true,
+          "dimension_sets": [
+            {
+              "android_devices": "4",
+              "device_os": "KTU84P",
+              "device_type": "hammerhead"
+            }
+          ]
+        },
+        "test": "sync_unit_tests"
+      },
+      {
         "override_isolate_target": "ui_android_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "dimension_sets": [
             {
               "android_devices": "4",
               "device_os": "KTU84P",
               "device_type": "hammerhead"
             }
           ]
@@ skipping 193 matching lines @@
       {
         "override_compile_targets": [
           "sandbox_linux_unittests"
         ],
         "test": "sandbox_linux_unittests"
       },
       {
         "test": "sql_unittests"
       },
       {
+        "test": "sync_unit_tests"
+      },
+      {
         "test": "ui_android_unittests"
       },
       {
         "test": "ui_base_unittests"
       },
       {
         "test": "ui_touch_selection_unittests"
       },
       {
         "test": "unit_tests"
@@ skipping 189 matching lines @@
         "test": "sandbox_linux_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "sql_unittests"
       },
       {
         "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "sync_unit_tests"
+      },
+      {
+        "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "ui_base_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "url_unittests"
       }
@@ skipping 413 matching lines @@
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "sync_integration_tests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "sync_unit_tests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "test_ime_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "ui_base_unittests"
       },
       {
         "swarming": {
@@ skipping 413 matching lines @@
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "sync_integration_tests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "sync_unit_tests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "test_ime_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "ui_base_unittests"
       },
       {
         "swarming": {
@@ skipping 347 matching lines @@
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "sync_integration_tests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "sync_unit_tests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "ui_base_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "ui_touch_selection_unittests"
       },
       {
         "swarming": {
@@ skipping 31 matching lines @@
         "override_compile_targets": [
           "telemetry_unittests_run"
         ],
         "swarming": {
           "can_use_on_swarming_builders": true
         }
       }
     ]
   }
 }