Update AppBannerManager so that it can create and dismiss Banners

Update AppBannerManager so that it can create and dismiss Banners

* AppBannerManager is given the ability to create banners.  See
  the C++ header for details on how the asynchronous pipeline works.

* DetailsDelegate class is added to provide information to the
  AppBannerManager about packages being advertised.

* AppBannerManager dismisses banners after navigations.

* AppBannerManager fires intents provided by the DetailsDelegate
  to launch the Play store and installer.

* AppBannerView is notified when the install state changes so it
  can update its buttons.

Design doc (has image showing how the pipeline works, text is out of date):
http://goo.gl/a77OXx

Depends on:
https://chromiumcodereview.appspot.com/141853007/
https://chromiumcodereview.appspot.com/156013005/

NOTRY=true
BUG=341556

Review URL: https://codereview.chromium.org/156343002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@252557 0039d316-1c4b-4281-b951-d872f2087c98