Remove the NaCl SRPC proxy from Chrome.

ppapi/api/private/ppb_nacl_private.idl

 /* 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.
  */
 
 /* This file contains NaCl private interfaces. */
 
 #inline c
 #include "ppapi/c/private/pp_file_handle.h"
 #endinl
 
 /**
  * The <code>PP_NaClResult</code> enum contains NaCl result codes.
  */
 [assert_size(4)]
 enum PP_NaClResult {
   /** Successful NaCl call */
   PP_NACL_OK = 0,
   /** Unspecified NaCl error */
   PP_NACL_FAILED = 1,
   /** Error creating the module */
   PP_NACL_ERROR_MODULE = 2,
   /** Error creating and initializing the instance */
-  PP_NACL_ERROR_INSTANCE = 3,
-  /** SRPC proxy should be used instead */
-  PP_NACL_USE_SRPC = 128
+  PP_NACL_ERROR_INSTANCE = 3
 };
 
 /** NaCl-specific errors that should be reported to the user */
 enum PP_NaClError {
   /**
    *  The manifest program element does not contain a program usable on the
    *  user's architecture
   */
   PP_NACL_MANIFEST_MISSING_ARCH = 0
 };
@@ skipping 71 matching lines @@
   PP_Bool IsOffTheRecord();
 
   /* Return true if PNaCl is turned on.
    */
   PP_Bool IsPnaclEnabled();
 
   /* Display a UI message to the user. */
   PP_NaClResult ReportNaClError([in] PP_Instance instance,
                                 [in] PP_NaClError message_id);
 };