Change data pipe wrappers used by SerialConnection to use message pipe.

extensions/test/data/data_receiver_unittest.js

Index: extensions/test/data/data_receiver_unittest.js
diff --git a/extensions/test/data/data_receiver_unittest.js b/extensions/test/data/data_receiver_unittest.js
index e4fad3e3631fb4ea9dfd82f471121368205a732c..75d3ca76f99b882a944b66d4798762c9b05fb06a 100644
--- a/extensions/test/data/data_receiver_unittest.js
+++ b/extensions/test/data/data_receiver_unittest.js
@@ -175,11 +175,4 @@ unittestBindings.exportTests([
         .then(test.succeed, test.fail);
   },
 
-  function testSourceShutdown() {
-    createReceiver()
-        .then(receiveAndCheckError(FATAL_ERROR))
-        .then(closeReceiver)
-        .then(test.succeed, test.fail);
-  },
-
 ], test.runTests, exports);