Remove unnecessary add/removeObserver lifetime notifier indirections.

With LifetimeNotifier<T,O>::{add,remove}Observer(O*) now being type
accurate & safe, we can simply expose these as public and avoid having
to define&declare forwarding versions. Unless the overriding is needed
(e.g., ContextLifecycleNotifier::addObserver().)

R=haraken
BUG=462949

Review URL: https://codereview.chromium.org/991763002

git-svn-id: svn://svn.chromium.org/blink/trunk@191537 bbb929c8-8fbe-4397-9dbb-9b2b20218538
9 files changed
tree: 038b82e7e0d9fa705bfda5ae7e577a9666ee89e3
  1. third_party/