forgot to commit FabContainer

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/util/FabContainer.java

@@ -0,0 +1,8 @@
+package org.sufficientlysecure.keychain.util;
+
+public interface FabContainer {
+
+    void fabMoveUp(int height);
+    void fabRestorePosition();
+
+}