Cache more information when launching NaCl sel_ldr, and pass 'Dev' interface

chrome/common/render_messages.h

Index: chrome/common/render_messages.h
===================================================================
--- chrome/common/render_messages.h	(revision 163557)
+++ chrome/common/render_messages.h	(working copy)
@@ -497,12 +497,13 @@
 // a new instance of the Native Client process. The browser will launch
 // the process and return an IPC channel handle. This handle will only
 // be valid if the NaCl IPC proxy is enabled.
-IPC_SYNC_MESSAGE_CONTROL2_2(ChromeViewHostMsg_LaunchNaCl,
+IPC_SYNC_MESSAGE_CONTROL2_3(ChromeViewHostMsg_LaunchNaCl,
                             GURL /* manifest_url */,
                             int /* socket count */,
                             std::vector<nacl::FileDescriptor>
                                 /* imc channel handles */,
-                            IPC::ChannelHandle /* ipc_channel_handle */)
+                            IPC::ChannelHandle /* ipc_channel_handle */,
+                            int /* plugin_child_id */)
 
 // A renderer sends this to the browser process when it wants to
 // open a file for from the Pnacl component directory.