PNaCl: Use Chrome IPC to talk to the linker process, instead of SRPC

ppapi/proxy/ppapi_messages.h

 // Copyright (c) 2012 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.
 
 // Multiply-included message header, no traditional include guard.
 
 #include <stdint.h>
 
 #include <map>
 #include <string>
@@ skipping 853 matching lines @@
                     ppapi::proxy::PPPDecryptor_Buffer /* buffer */,
                     std::string /* serialized_block_info */)
 
 // PPP_Instance_Private.
 IPC_SYNC_MESSAGE_ROUTED1_1(PpapiMsg_PPPInstancePrivate_GetInstanceObject,
                            PP_Instance /* instance */,
                            ppapi::proxy::SerializedVar /* result */)
 
 #endif  // !defined(OS_NACL) && !defined(NACL_WIN64)
 
+// This message is sent from the renderer to the PNaCl linker process
+// (NaCl untrusted code -- a nexe).  This message tells the PNaCl
+// linker to link the given object files together to produce a nexe
+// file, writing the output to the given file handle.
+IPC_SYNC_MESSAGE_CONTROL2_1(PpapiMsg_PnaclTranslatorLink,
+                            /* object file FDs for inputs */
+                            std::vector<ppapi::proxy::SerializedHandle>,
+                            /* nexe file FD for output */
+                            ppapi::proxy::SerializedHandle,
+                            /* success status result */
+                            bool)
+
 // Reports to the browser that a plugin has been active.
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_Keepalive)
 
 // -----------------------------------------------------------------------------
 // These are from the plugin to the renderer.
 
 // Reply to PpapiMsg_CreateChannel. The handle will be NULL if the channel
 // could not be established. This could be because the IPC could not be created
 // for some weird reason, but more likely that the plugin failed to load or
 // initialize properly.
@@ skipping 1501 matching lines @@
                      std::vector<ppapi::HostResource> /* buffers */,
                      uint32_t /* buffer_size */)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_VideoCapture_OnStatus,
                      uint32_t /* status */)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_VideoCapture_OnError,
                      uint32_t /* error */)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_VideoCapture_OnBufferReady,
                      uint32_t /* buffer */)
 
 #endif  // !defined(OS_NACL) && !defined(NACL_WIN64)