Adding a router class to handle messages that expect responses.

mojo/bindings/java/src/org/chromium/mojo/bindings/Message.java

Index: mojo/bindings/java/src/org/chromium/mojo/bindings/Message.java
diff --git a/mojo/bindings/java/src/org/chromium/mojo/bindings/Message.java b/mojo/bindings/java/src/org/chromium/mojo/bindings/Message.java
index f826a8e034c9215a8a8e6496e05c716619a32d0d..b7ec42dbcfad44d4d16fcc1f16fb1f0a05e2703d 100644
--- a/mojo/bindings/java/src/org/chromium/mojo/bindings/Message.java
+++ b/mojo/bindings/java/src/org/chromium/mojo/bindings/Message.java
@@ -17,7 +17,7 @@ import javax.annotation.Nullable;
 /**
  * A raw message to be sent/received from a {@link MessagePipeHandle}.
  */
-public final class Message {
+public class Message {

[rmcilroy, 2014/07/14 14:44:57]

I think this can still be final since you are wrapping rather than extending

[qsr, 2014/07/15 12:03:16]

Done.

 
     /**
      * The data of the message.
@@ -56,7 +56,7 @@ public final class Message {
         result = handle.readMessage(buffer, result.getHandlesCount(),
                 MessagePipeHandle.ReadFlags.NONE);
         if (receiver != null && result.getMojoResult() == MojoResult.OK) {
-            receiver.accept(new Message(buffer, result.getHandles()));
+            receiver.accept(new MessageWithHeader(new Message(buffer, result.getHandles())));
         }
         return result.getMojoResult();
     }