Allow client process information to be passed via Connector::Connect().

content/browser/mojo/mojo_child_connection.h

+// 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.
+
+#ifndef CONTENT_BROWSER_MOJO_MOJO_CHILD_CONNECTION_H_
+#define CONTENT_BROWSER_MOJO_MOJO_CHILD_CONNECTION_H_
+
+#include <string>
+
+#include "base/process/process_handle.h"
+#include "mojo/shell/public/interfaces/shell.mojom.h"
+
+namespace mojo {
+class Connection;
+}
+
+namespace content {
+
+class RenderProcessHost;
+
+// Establish a mojo::Connection to the child process, using a pipe created for
+// that purpose. Returns a token that should be passed to the child process and
+// exchanged for a pipe there. That pipe can in turn be passed to
+// MojoShellConnectionImpl::BindToMessagePipe() to initialize the child's
+// shell connection.
+std::string MojoConnectToChild(int child_process_id,
+                               int instance_id,
+                               RenderProcessHost* render_process_host);
+
+// Returns a mojo connection to the provided render process host. This
+// connection was opened when MojoConnectToChild() was called.
+mojo::Connection* GetMojoConnection(RenderProcessHost* render_process_host);
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MOJO_MOJO_CHILD_CONNECTION_H_