Sync with abaf09c
Sync with abaf09c

Synced with dart-lang/site-webdev master branch, commit abaf09c:
https://github.com/dart-lang/site-webdev/tree/abaf09cb7e022acbf40cd01d674958109f2e1bb0/examples/ng/doc/server-communication

googlearchive/server-communication,angular-examples/server-communication,angular-examples/server-communication,googlearchive/server-communication