Get mojo_shell building inside chromium checkout.

mojo/shell/child_process.cc

Index: mojo/shell/child_process.cc
diff --git a/mojo/shell/child_process.cc b/mojo/shell/child_process.cc
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+// Copyright 2014 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/child_process.h"
+
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "mojo/edk/embedder/platform_channel_pair.h"
+#include "mojo/shell/app_child_process.h"
+#include "mojo/shell/switches.h"
+
+namespace mojo {
+namespace shell {
+
+ChildProcess::~ChildProcess() {
+}
+
+// static
+scoped_ptr<ChildProcess> ChildProcess::Create(
+    const base::CommandLine& command_line) {
+  if (!command_line.HasSwitch(switches::kChildProcess))
+    return scoped_ptr<ChildProcess>();
+
+  scoped_ptr<ChildProcess> rv(new AppChildProcess());
+  if (!rv)
+    return nullptr;
+
+  rv->platform_channel_ =
+      embedder::PlatformChannelPair::PassClientHandleFromParentProcess(
+          command_line);
+  CHECK(rv->platform_channel_.is_valid());
+  return rv;
+}
+
+ChildProcess::ChildProcess() {
+}
+
+}  // namespace shell
+}  // namespace mojo