Use setAlpha(float), not deprecated setAlpha(int)

Bug: 20923724
Change-Id: I9a6bd99bf3bef70359c1acc9398fa29917f40c74
diff --git a/src/com/android/contacts/common/widget/FloatingActionButtonController.java b/src/com/android/contacts/common/widget/FloatingActionButtonController.java
index 81ace42..1cfb89c 100644
--- a/src/com/android/contacts/common/widget/FloatingActionButtonController.java
+++ b/src/com/android/contacts/common/widget/FloatingActionButtonController.java
@@ -162,7 +162,7 @@
      * Immediately remove the affects of the last call to {@link #scaleOut}.
      */
     public void resetIn() {
-        mFloatingActionButton.setAlpha(1);
+        mFloatingActionButton.setAlpha(1f);
         mFloatingActionButton.setVisibility(View.VISIBLE);
         mFloatingActionButtonContainer.setScaleX(1);
         mFloatingActionButtonContainer.setScaleY(1);