Support changing FAB icon to add person.

+ Add function to change the icon on the FAB. Should likely
eventually include an optional animate parameter.
+ Change FAB controller so that it recognizes the FAB button
as an ImageButton.
+ Flip add person icons to white.

Bug: 19366434
Change-Id: I5f6cf07ffce1d0eaa1aa0733f7411247cba1d6c0
diff --git a/res-common/drawable-hdpi/ic_person_add_24dp.png b/res-common/drawable-hdpi/ic_person_add_24dp.png
index 1b71ff1..10ae5a7 100644
--- a/res-common/drawable-hdpi/ic_person_add_24dp.png
+++ b/res-common/drawable-hdpi/ic_person_add_24dp.png
Binary files differ
diff --git a/res-common/drawable-mdpi/ic_person_add_24dp.png b/res-common/drawable-mdpi/ic_person_add_24dp.png
index b6cf02d..38e0a28 100644
--- a/res-common/drawable-mdpi/ic_person_add_24dp.png
+++ b/res-common/drawable-mdpi/ic_person_add_24dp.png
Binary files differ
diff --git a/res-common/drawable-xhdpi/ic_person_add_24dp.png b/res-common/drawable-xhdpi/ic_person_add_24dp.png
index 2d265e1..7e7c289 100644
--- a/res-common/drawable-xhdpi/ic_person_add_24dp.png
+++ b/res-common/drawable-xhdpi/ic_person_add_24dp.png
Binary files differ
diff --git a/res-common/drawable-xxhdpi/ic_person_add_24dp.png b/res-common/drawable-xxhdpi/ic_person_add_24dp.png
index 6091312..8f744f0 100644
--- a/res-common/drawable-xxhdpi/ic_person_add_24dp.png
+++ b/res-common/drawable-xxhdpi/ic_person_add_24dp.png
Binary files differ
diff --git a/res-common/drawable-xxxhdpi/ic_person_add_24dp.png b/res-common/drawable-xxxhdpi/ic_person_add_24dp.png
index c33a0d0..2fa2cca 100644
--- a/res-common/drawable-xxxhdpi/ic_person_add_24dp.png
+++ b/res-common/drawable-xxxhdpi/ic_person_add_24dp.png
Binary files differ