Include icu.isolate from ui_unittests.isolate

ui_unittests needs the ICU data file.

Review URL: https://codereview.chromium.org/259123002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266742 0039d316-1c4b-4281-b951-d872f2087c98

ui/ui_unittests.isolate

@@ -12,4 +12,7 @@
       },
     }],
   ],
+  'includes': [
+    '../third_party/icu/icu.isolate',
+  ],
 }