Sync with 40236a3
Sync with 40236a3

Synced with dart-lang/site-webdev master branch, commit 40236a3:
https://github.com/dart-lang/site-webdev/tree/40236a3506f601b063c49b9bf1e9c2d7d3513937/examples/ng/doc/lifecycle-hooks

angular-examples/lifecycle-hooks,googlearchive/lifecycle-hooks,angular-examples/lifecycle-hooks,googlearchive/lifecycle-hooks