Add storage_unittests to buildbots.

testing/buildbot/gn_isolate_map.pyl

 ## Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # gn_isolate_map.pyl - A mapping of Ninja build target names to GN labels and
 # test type classifications for the tests that are run on the bots.
 #
 # This mapping is used by MB so that we can uniformly refer to test binaries
 # by their Ninja target names in the recipes and not need to worry about how
 # they are referred to in GN or GYP specifically (the GYP target name is pretty
@@ skipping 771 matching lines @@
     "type": "console_test_launcher",
   },
   "skia_unittests": {
     "label": "//skia:skia_unittests",
     "type": "console_test_launcher",
   },
   "sql_unittests": {
     "label": "//sql:sql_unittests",
     "type": "console_test_launcher",
   },
+  "storage_unittests": {
+    "label": "//storage/browser:storage_unittests",
+    "type": "console_test_launcher",
+  },
   "sync_integration_tests": {
     "label": "//chrome/test:sync_integration_tests",
     "type": "windowed_test_launcher",
   },
   "system_webview_apk": {
     "label": "//android_webview:system_webview_apk",
     "type": "additional_compile_target",
   },
   "system_wrappers_unittests": {
     "label": "//webrtc/system_wrappers:system_wrappers_unittests",
@@ skipping 153 matching lines @@
   },
   "wtf_unittests": {
     "label": "//third_party/WebKit/Source/wtf:wtf_unittests",
     "type": "console_test_launcher",
   },
   "xmllite_xmpp_unittests": {
     "label": "//webrtc:xmllite_xmpp_unittests",
     "type": "console_test_launcher",
   }
 }