[mojo-edk] Remove ChildProcessLaunched that returns a pipe handle.

components/arc/arc_bridge_bootstrap.cc

 // Copyright 2015 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 "components/arc/arc_bridge_bootstrap.h"
 
 #include <fcntl.h>
 #include <grp.h>
 #include <unistd.h>
 
@@ skipping 235 matching lines @@
 base::ScopedFD ArcBridgeBootstrapImpl::AcceptInstanceConnection(
     base::ScopedFD socket_fd) {
   int raw_fd = -1;
   if (!IPC::ServerAcceptConnection(socket_fd.get(), &raw_fd)) {
     return base::ScopedFD();
   }
   base::ScopedFD scoped_fd(raw_fd);
 
   // Hardcode pid 0 since it is unused in mojo.
   const base::ProcessHandle kUnusedChildProcessHandle = 0;
-  mojo::edk::ScopedPlatformHandle child_handle =
-      mojo::edk::ChildProcessLaunched(kUnusedChildProcessHandle);
+  mojo::edk::PlatformChannelPair channel_pair;
+  mojo::edk::ChildProcessLaunched(kUnusedChildProcessHandle,
+                                  channel_pair.PassServerHandle());
 
   mojo::edk::ScopedPlatformHandleVectorPtr handles(
-      new mojo::edk::PlatformHandleVector{child_handle.release()});
+      new mojo::edk::PlatformHandleVector{
+          channel_pair.PassClientHandle().release()});
 
   struct iovec iov = {const_cast<char*>(""), 1};
   ssize_t result = mojo::edk::PlatformChannelSendmsgWithHandles(
       mojo::edk::PlatformHandle(scoped_fd.get()), &iov, 1, handles->data(),
       handles->size());
   if (result == -1) {
     PLOG(ERROR) << "sendmsg";
     return base::ScopedFD();
   }
 
@@ skipping 62 matching lines @@
 }
 
 }  // namespace
 
 // static
 std::unique_ptr<ArcBridgeBootstrap> ArcBridgeBootstrap::Create() {
   return base::WrapUnique(new ArcBridgeBootstrapImpl());
 }
 
 }  // namespace arc