[mojo] Implement data pipe using a shared buffer.

mojo/edk/system/core.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 <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 457 matching lines @@
   DCHECK_NE(handle_pair.second, MOJO_HANDLE_INVALID);
 
   ScopedPlatformHandle server_handle, client_handle;
 #if defined(OS_WIN)
   internal::g_broker->CreatePlatformChannelPair(&server_handle, &client_handle);
 #else
   PlatformChannelPair channel_pair;
   server_handle = channel_pair.PassServerHandle();
   client_handle = channel_pair.PassClientHandle();
 #endif
-  producer_dispatcher->Init(std::move(server_handle), nullptr, 0u);
-  consumer_dispatcher->Init(std::move(client_handle), nullptr, 0u);
+  producer_dispatcher->Init(std::move(server_handle), nullptr, 0u, nullptr, 0u,
+                            ScopedPlatformHandle(), 0, 0);
+  consumer_dispatcher->Init(std::move(client_handle), nullptr, 0u, nullptr, 0u,
+                            ScopedPlatformHandle(), 0, 0);
 
   *data_pipe_producer_handle = handle_pair.first;
   *data_pipe_consumer_handle = handle_pair.second;
   return MOJO_RESULT_OK;
 }
 
 MojoResult Core::WriteData(MojoHandle data_pipe_producer_handle,
                            const void* elements,
                            uint32_t* num_bytes,
                            MojoWriteDataFlags flags) {
@@ skipping 210 matching lines @@
   if (signals_states) {
     for (; i < num_handles; i++)
       signals_states[i] = dispatchers[i]->GetHandleSignalsState();
   }
 
   return rv;
 }
 
 }  // namespace edk
 }  // namespace mojo