This PR enables intersection observer support for WebKit, and includes a system test.
------------- Commit messages: - Include html file - Enable intersection observer support, including system test Changes: https://git.openjdk.java.net/jfx/pull/664/files Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=664&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8276847 Stats: 183 lines in 3 files changed: 180 ins; 1 del; 2 mod Patch: https://git.openjdk.java.net/jfx/pull/664.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/664/head:pull/664 PR: https://git.openjdk.java.net/jfx/pull/664
