Update browseable for messagingservice.

Change-Id: I1f5ec4a141f71898d92fcefaf22b237ea2a250bc
diff --git a/samples/browseable/MessagingService/src/com.example.android.messagingservice/Conversations.java b/samples/browseable/MessagingService/src/com.example.android.messagingservice/Conversations.java
index 210e061..7425df4 100644
--- a/samples/browseable/MessagingService/src/com.example.android.messagingservice/Conversations.java
+++ b/samples/browseable/MessagingService/src/com.example.android.messagingservice/Conversations.java
@@ -45,10 +45,10 @@
      * Senders of the said messages.
      */
     private static final String[] PARTICIPANTS = new String[]{
-            "John Rambo",
-            "Han Solo",
-            "Rocky Balboa",
-            "Lara Croft"
+            "John Smith",
+            "Robert Lawrence",
+            "James Smith",
+            "Jane Doe"
     };
 
     static class Conversation {