Change primordial pipes to ShellClient

mojo/shell/runner/common/client_util.cc

Index: mojo/shell/runner/common/client_util.cc
diff --git a/mojo/shell/runner/common/client_util.cc b/mojo/shell/runner/common/client_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2c264bd27812cce7a4a27f3ce2a91f20e6c46a4a
--- /dev/null
+++ b/mojo/shell/runner/common/client_util.cc
@@ -0,0 +1,38 @@
+// Copyright 2016 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/shell/runner/common/client_util.h"
+
+#include <string>
+
+#include "base/command_line.h"
+#include "mojo/edk/embedder/embedder.h"
+#include "mojo/shell/runner/common/switches.h"
+
+namespace mojo {
+namespace shell {
+
+mojom::ShellClientPtr PassShellClientRequestOnCommandLine(
+    base::CommandLine* command_line) {
+  std::string token = edk::GenerateRandomToken();
+  command_line->AppendSwitchASCII(switches::kPrimordialPipeToken, token);
+
+  mojom::ShellClientPtr client;
+  client.Bind(
+      mojom::ShellClientPtrInfo(edk::CreateParentMessagePipe(token), 0));
+  return client;
+}
+
+mojom::ShellClientRequest GetShellClientRequestFromCommandLine() {
+  std::string token =
+      base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kPrimordialPipeToken);
+  mojom::ShellClientRequest request;
+  if (!token.empty())
+    request.Bind(edk::CreateChildMessagePipe(token));
+  return request;
+}
+
+}  // namespace shell
+}  // namespace mojo