Convert base_unittests to Swarming everywhere.

testing/buildbot/chromium.webkit.json

 {
   "Linux ChromiumOS Tests (1)": {
     "gtest_tests": [
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "accessibility_unittests"
       },
       {
@@ skipping 473 matching lines @@
       "sync_unit_tests",
       "ui_base_unittests",
       "ui_touch_selection_unittests",
       "unit_tests",
       "url_unittests",
       "views_unittests",
       "wm_unittests"
     ],
     "gtest_tests": [
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true

[M-A Ruel, 2015/06/23 17:49:54]

Same question

[Dirk Pranke, 2015/06/23 19:17:57]

This one needs to be blacklisted; the chromium.webkit GN bots are still running
the 'chromium_gn' recipe, which doesn't support swarming.

[M-A Ruel, 2015/06/23 19:26:59]

Blacklisted 'Linux GN (dbg)'. 'Linux GN' was already blacklisted.

+        },
         "test": "base_unittests"
       }
     ]
   },
   "WebKit Linux": {
     "gtest_tests": [
       {
         "test": "blink_heap_unittests"
       },
       {
@@ skipping 557 matching lines @@
         "name": "webkit_lint",
         "script": "webkit_lint.py"
       },
       {
         "name": "webkit_python_tests",
         "script": "webkit_python_tests.py"
       }
     ]
   }
 }