Fix the ninja target -> GN label mapping for wtf_unittests, webkit_unit_tests

testing/buildbot/gn_isolate_map.pyl

Index: testing/buildbot/gn_isolate_map.pyl
diff --git a/testing/buildbot/gn_isolate_map.pyl b/testing/buildbot/gn_isolate_map.pyl
index ef2a219421476777c211e6f3f5f315e0e0e20310..aea3ffb6dbf74e2d58c9dae5d49231da39fbcd17 100644
--- a/testing/buildbot/gn_isolate_map.pyl
+++ b/testing/buildbot/gn_isolate_map.pyl
@@ -468,15 +468,15 @@
     "type": "unknown",
   },
   "webkit_unit_tests": {
-    "label": "//third_party/WebKit/public:webkit_unit_tests",
-    "type": "unknown",
+    "label": "//third_party/WebKit/Source/web:webkit_unit_tests",
+    "type": "console_test_launcher",
   },
   "wm_unittests": {
     "label": "//ui/wm:wm_unittests",
     "type": "windowed_test_launcher",
   },
   "wtf_unittests": {
-    "label": "//third_party/WebKit/public:wtf_unittests",
-    "type": "unknown",
+    "label": "//third_party/WebKit/Source/wtf:wtf_unittests",
+    "type": "console_test_launcher",
   },
 }