[DO NOT MERGE] Fix block/unblock crash in call log history tab.

+When long-pressing and then pressing block/unblock in call history tab,
the dialer crashes
+This is because in CallLogListItemViewHolder, the block/unblock dialog
is shown, and after the user confirms, a snackbar is shown. The parent
of this snackbar is a View with the id floating_action_button_container.
The dialtacts_activity.xml has this but the call_log_activity.xml does
not, causing the snackbar to have a null parent view.
+Add floating_action_button_container to the call_log_activity.xml

Fixes: 27976785
Fixes: 31361083

Change-Id: I5aa79093a21d7006e989c7ca0095bc7b25a261a5
(cherry picked from commit 167c6d1c3621f6be96952daaf0e8e7284bdae252)
diff --git a/res/layout/call_log_activity.xml b/res/layout/call_log_activity.xml
index 0109df7..aa1a6f4 100644
--- a/res/layout/call_log_activity.xml
+++ b/res/layout/call_log_activity.xml
@@ -33,4 +33,8 @@
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:layout_weight="1" />
+    <RelativeLayout
+        android:id="@+id/floating_action_button_container"
+        android:layout_width="0dp"
+        android:layout_height="0dp" />
 </LinearLayout>