Restore the "Contacts to display" custom filter (1/3)

* Revert "Remove AccountFilterActivity and its usage (Contacts)"
  This reverts commit 1fc8847aa6bef1b6ceb017870d3de90f5960757e.
* But we don't restore the changes to DefaultContactBrowseListFragment
  since we won't be starting the "Contacts to display" filter
  from an overflow menu option on PeopleActivity.
* In DrawerActivity and PeopleActivity, everywhere we check for
  FITLER_TYPE_ALL_ACCOUNTS, we must also accept FILTER_TYPE_CUSTOM,
  since either of those can be used for the default/main contacts
  list again.

Bug 29185471

Change-Id: Ie77e8acb16980b9015bd1f1f4af9fb7a014f3c51
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index d6954b3..4624b9b 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -216,6 +216,18 @@
             android:theme="@style/ContactsPreferencesTheme"
             android:exported="false" />
 
+        <!-- Used to filter contacts list by account -->
+        <activity
+            android:name=".common.list.AccountFilterActivity"
+            android:label="@string/activity_title_contacts_filter"
+            android:theme="@style/ContactListFilterTheme" />
+
+        <!-- Used to select display and sync groups -->
+        <activity
+            android:name=".common.list.CustomContactListFilterActivity"
+            android:label="@string/custom_list_filter"
+            android:theme="@style/ContactListFilterTheme" />
+
         <activity
             android:name=".common.activity.RequestPermissionsActivity"
             android:label="@string/launcherActivityLabel"