NaCl: Remove getpid() calls from the PPAPI proxy

ppapi/native_client/src/shared/ppapi_proxy/ppp_rpc_client.cc

 // 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.
 //
 // WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
 //
 // Automatically generated code.  See srpcgen.py
 //
 // NaCl Simple Remote Procedure Call interface abstractions.
 
@@ skipping 22 matching lines @@
       "RunCompletionCallback:iiC:",
       callback_id,
       result,
       read_buffer_bytes, read_buffer
   );
   return retval;
 }
 
 NaClSrpcError PppRpcClient::PPP_InitializeModule(
     NaClSrpcChannel* channel,
-    int32_t pid,
     PP_Module module,
     NaClSrpcImcDescType upcall_channel_desc,
     const char* service_description,
-    int32_t* nacl_pid,
     int32_t* success)  {
   NaClSrpcError retval;
   retval = NaClSrpcInvokeBySignature(
       channel,
-      "PPP_InitializeModule:iihs:ii",
-      pid,
+      "PPP_InitializeModule:ihs:i",
       module,
       upcall_channel_desc,
       service_description,
-      nacl_pid,
       success
   );
   return retval;
 }
 
 NaClSrpcError PppRpcClient::PPP_ShutdownModule(
     NaClSrpcChannel* channel)  {
   NaClSrpcError retval;
   retval = NaClSrpcInvokeBySignature(
       channel,
@@ skipping 394 matching lines @@
       instance,
       factor,
       text_only
   );
   if (retval == NACL_SRPC_RESULT_INTERNAL)
     ppapi_proxy::CleanUpAfterDeadNexe(instance);
   return retval;
 }