Pepper: Simplify Pnacl manifest id logic.

ppapi/native_client/src/trusted/plugin/plugin.h

 // -*- c++ -*-
 // 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.
 
 // The portable representation of an instance and root scriptable object.
 // The PPAPI version of the plugin instantiates a subclass of this class.
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PLUGIN_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PLUGIN_H_
@@ skipping 95 matching lines @@
   // main-thread-only operations such as file processing.
   bool LoadNaClModuleContinuation(int32_t pp_error);
 
   // Load support.
   // A helper SRPC NaCl module can be loaded given a PP_FileHandle.
   // Blocks until the helper module signals initialization is done.
   // Does not update nacl_module_origin().
   // Returns NULL or the NaClSubprocess of the new helper NaCl module.
   NaClSubprocess* LoadHelperNaClModule(const nacl::string& helper_url,
                                        PP_FileHandle file_handle,
-                                       int32_t manifest_id,
                                        ErrorInfo* error_info);
 
   enum LengthComputable {
     LENGTH_IS_NOT_COMPUTABLE = 0,
     LENGTH_IS_COMPUTABLE = 1
   };
   // Report successful loading of a module.
   void ReportLoadSuccess(uint64_t loaded_bytes, uint64_t total_bytes);
   // Report an error that was encountered while loading a module.
   void ReportLoadError(const ErrorInfo& error_info);
@@ skipping 148 matching lines @@
   uint64_t nexe_token_lo_;
   uint64_t nexe_token_hi_;
 
   const PPB_NaCl_Private* nacl_interface_;
   pp::UMAPrivate uma_interface_;
 };
 
 }  // namespace plugin
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PLUGIN_H_