WIP: A couple of more ChannelMojo speedup ideas

third_party/mojo/src/mojo/edk/system/channel_endpoint.cc

Index: third_party/mojo/src/mojo/edk/system/channel_endpoint.cc
diff --git a/third_party/mojo/src/mojo/edk/system/channel_endpoint.cc b/third_party/mojo/src/mojo/edk/system/channel_endpoint.cc
index 0e071d8eef50a2187b773dee198a9886f0307fd2..f38d1b7623d29d9fd62ca60ca44d7077f623c767 100644
--- a/third_party/mojo/src/mojo/edk/system/channel_endpoint.cc
+++ b/third_party/mojo/src/mojo/edk/system/channel_endpoint.cc
@@ -92,7 +92,8 @@ void ChannelEndpoint::AttachAndRun(Channel* channel,
   }
 }
 
-void ChannelEndpoint::OnReadMessage(scoped_ptr<MessageInTransit> message) {
+void ChannelEndpoint::OnReadMessage(
+    MessageInTransit::ReadContext& reading_message) {
   scoped_refptr<ChannelEndpointClient> client;
   unsigned client_port = 0;
 
@@ -125,8 +126,7 @@ void ChannelEndpoint::OnReadMessage(scoped_ptr<MessageInTransit> message) {
       client_port = client_port_;
     }
 
-    if (client->OnReadMessage(client_port, message.get())) {
-      ignore_result(message.release());
+    if (client->OnReadMessage(client_port, reading_message)) {
       break;
     }