Add multiplexing of message pipes in the new EDK.

mojo/edk/system/core_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/edk/system/core.h"
 
 #include <stdint.h>
 
 #include <limits>
 
@@ skipping 712 matching lines @@
 #endif
   ASSERT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
             core()->WriteMessage(h_passing[0], kHello, kHelloSize,
                                  &h_passing[1], 1,
                                  MOJO_WRITE_MESSAGE_FLAG_NONE));
 #if defined(OS_WIN)
   }
 #endif
 
   MojoHandle h_passed[2];
+  MojoCreateMessagePipeOptions options;
+  options.struct_size = sizeof(MojoCreateMessagePipeOptions);
+  options.flags = MOJO_CREATE_MESSAGE_PIPE_OPTIONS_FLAG_TRANSFERABLE;
   ASSERT_EQ(MOJO_RESULT_OK,
-            core()->CreateMessagePipe(nullptr, &h_passed[0], &h_passed[1]));
+            core()->CreateMessagePipe(&options, &h_passed[0], &h_passed[1]));
 
   // Make sure that |h_passed[]| work properly.
   ASSERT_EQ(MOJO_RESULT_OK,
             core()->WriteMessage(h_passed[0], kHello, kHelloSize, nullptr, 0,
                                  MOJO_WRITE_MESSAGE_FLAG_NONE));
   hss = kEmptyMojoHandleSignalsState;
   ASSERT_EQ(MOJO_RESULT_OK,
             core()->Wait(h_passed[1], MOJO_HANDLE_SIGNAL_READABLE, 1000000000,
                          &hss));
   ASSERT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE,
@@ skipping 521 matching lines @@
   ASSERT_EQ(MOJO_RESULT_BUSY, waiter.result);
 
   ASSERT_EQ(MOJO_RESULT_OK, core()->Close(h));
 }
 
 // TODO(vtl): Test |DuplicateBufferHandle()| and |MapBuffer()|.
 
 }  // namespace
 }  // namespace edk
 }  // namespace mojo