Pass the client end handle of the network-to-daemon IPC channel via handle inheritance.

remoting/host/win/launch_process_with_token.h

Index: remoting/host/win/launch_process_with_token.h
diff --git a/remoting/host/win/launch_process_with_token.h b/remoting/host/win/launch_process_with_token.h
index 8f462199b893db7ae9d7761038a9f581f1471c7f..994d016dfa347cbfd8a64cf6841c33ea1259c033 100644
--- a/remoting/host/win/launch_process_with_token.h
+++ b/remoting/host/win/launch_process_with_token.h
@@ -10,19 +10,45 @@
 
 #include "base/command_line.h"
 #include "base/file_path.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/win/scoped_handle.h"
 
+namespace base {
+class SingleThreadTaskRunner;
+}  // namespace base
+
+namespace IPC {
+class ChannelProxy;
+class Listener;
+}  // namespace IPC
+
 namespace remoting {
 
+// Creates the server end of the IPC channel and applies the security
+// descriptor |pipe_security_descriptor| to it. The created channel proxy will
+// invoke methods of |delegate| on the calling thread while using
+// |io_task_runner| to send and receive messages in the background.
+bool CreateIpcChannel(
+    const std::string& channel_name,
+    const std::string& pipe_security_descriptor,
+    scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
+    IPC::Listener* delegate,
+    scoped_ptr<IPC::ChannelProxy>* channel_out);
+
 // Creates a copy of the current process token for the given |session_id| so
 // it can be used to launch a process in that session.
 bool CreateSessionToken(uint32 session_id, base::win::ScopedHandle* token_out);
 
+// Generates a unique IPC channel name.
+std::string GenerateIpcChannelName(void* client);
+
 // Launches |binary| in the security context of the user represented by
 // |user_token|. The session ID specified by the token is respected as well.
 bool LaunchProcessWithToken(const FilePath& binary,
                             const CommandLine::StringType& command_line,
                             HANDLE user_token,
+                            bool inherit_handles,
                             DWORD creation_flags,
                             base::win::ScopedHandle* process_out,
                             base::win::ScopedHandle* thread_out);