NaCl: Remove use of the C++ IMC interface; use the C version instead

ppapi/c/private/ppb_nacl_private.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.
  */
 
 /* From private/ppb_nacl_private.idl modified Thu Jan 10 15:59:03 2013. */
 
 #ifndef PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_
 #define PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_
 
@@ skipping 43 matching lines @@
  * @}
  */
 
 /**
  * @addtogroup Interfaces
  * @{
  */
 /* PPB_NaCl_Private */
 struct PPB_NaCl_Private_1_0 {
   /* Launches NaCl's sel_ldr process.  Returns PP_NACL_OK on success and
-   * writes a nacl::Handle to imc_handle. Returns PP_NACL_FAILED on failure.
+   * writes a NaClHandle to imc_handle. Returns PP_NACL_FAILED on failure.
    * The |enable_ppapi_dev| parameter controls whether GetInterface
    * returns 'Dev' interfaces to the NaCl plugin.  The |uses_ppapi| flag
    * indicates that the nexe run by sel_ldr will use the PPAPI APIs.
    * This implies that LaunchSelLdr is run from the main thread.  If a nexe
    * does not need PPAPI, then it can run off the main thread.
    * The |uses_irt| flag indicates whether the IRT should be loaded in this
    * NaCl process.  This is true for ABI stable nexes.
    */
   PP_NaClResult (*LaunchSelLdr)(PP_Instance instance,
                                 const char* alleged_url,
@@ skipping 54 matching lines @@
                                    PP_NaClError message_id);
 };
 
 typedef struct PPB_NaCl_Private_1_0 PPB_NaCl_Private;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_ */