Sync with 3a0a2e3
Sync with 3a0a2e3

Synced with dart-lang/site-webdev 5-dev branch, commit 3a0a2e3:
https://github.com/dart-lang/site-webdev/tree/3a0a2e3a1b0c6be4474bdb7a00dfff72e24942fb/examples/ng/doc/dependency-injection

angular-examples/dependency-injection,googlearchive/dependency-injection,angular-examples/dependency-injection,googlearchive/dependency-injection