tree 575bdab55c83baec993f5130f9883e9851804877
parent 66780a39cb23f596213be32d6922a8ab5279f504
author Juan Lang <juanlang@google.com> 1492789751 -0700
committer Juan Lang <juanlang@google.com> 1493144203 -0700

Allow the EmergencyInfo app to be tweaked with an overlay.

This allows the EmergencyInfo app to be replaced on some devices with
another app with the same package name. The two apps will share much of
the same source. The FeatureFactory interface provides a form of
dependency injection, allowing distinct concrete implementations to
exist for the same interface in the different apps.

In this first commit, the fragment class for the Contacts tab can be
overridden. This is an interim state intended to demonstrate the use of
the overlay mechanism in this app, while causing no regressions.

Test: Ran existing unit tests. Manually verified app still works as
expected.

Bug: 35335027
Change-Id: Icad03cf3351e47378c9b6a4b304621546d4e40c2