Summary:This fixes issue #206
- Adding missing headers for convertFromHTMLToContentBlocks
Closes #207
Reviewed By: ezequiel
Differential Revision: D3053014
fb-gh-sync-id: 8cf5eaab6b85352d177620e1421023da0b92e295
shipit-source-id: 8cf5eaab6b85352d177620e1421023da0b92e295