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

extensions/renderer/api/serial/data_receiver_unittest.cc

Index: extensions/renderer/api/serial/data_receiver_unittest.cc
diff --git a/extensions/renderer/api/serial/data_receiver_unittest.cc b/extensions/renderer/api/serial/data_receiver_unittest.cc
index 2415e00568e465e996ac402bb66135e940114c4b..09de207df3bf0ca1d70c66cb59124e920866856d 100644
--- a/extensions/renderer/api/serial/data_receiver_unittest.cc
+++ b/extensions/renderer/api/serial/data_receiver_unittest.cc
@@ -63,11 +63,6 @@ class DataReceiverTest : public ApiTestBase {
       error = error_to_send_.front();
       error_to_send_.pop();
     }
-    if (error == 2) {
-      sender_->ShutDown();
-      sender_ = NULL;
-      return;
-    }
     DCHECK(buffer->GetSize() >= static_cast<uint32_t>(data.size()));
     memcpy(buffer->GetData(), data.c_str(), data.size());
     if (error)
@@ -136,9 +131,4 @@ TEST_F(DataReceiverTest, SerializeAfterClose) {
   RunTest("data_receiver_unittest.js", "testSerializeAfterClose");
 }
 
-TEST_F(DataReceiverTest, SourceShutdown) {
-  error_to_send_.push(2);
-  RunTest("data_receiver_unittest.js", "testSourceShutdown");
-}
-
 }  // namespace extensions