PPAPI/NaCl: Move event dispatching from the plugin

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. This interface is not versioned
  * and is for internal Chrome use. It may change without notice. */
 
 label Chrome {
   M25 = 1.0
 };
 
 #inline c
 #include "ppapi/c/private/pp_file_handle.h"
 #include "ppapi/c/private/ppb_instance_private.h"
 #endinl
 
 /** 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
 };
 
+/** Event types that NaCl may use when reporting load progress or errors. */
+enum PP_NaClEventType {
+  PP_NACL_EVENT_LOADSTART,
+  PP_NACL_EVENT_PROGRESS,
+  PP_NACL_EVENT_ERROR,
+  PP_NACL_EVENT_ABORT,
+  PP_NACL_EVENT_LOAD,
+  PP_NACL_EVENT_LOADEND,
+  PP_NACL_EVENT_CRASH
+};
+
 /* PPB_NaCl_Private */
 interface PPB_NaCl_Private {
   /* Launches NaCl's sel_ldr process.  Returns PP_EXTERNAL_PLUGIN_OK on success
    * and writes a NaClHandle to imc_handle. Returns PP_EXTERNAL_PLUGIN_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
@@ skipping 115 matching lines @@
                                           [in] PP_NaClError message_id);
 
   /* Opens a NaCl executable file in the application's extension directory
    * corresponding to the file URL and returns a file descriptor, or an invalid
    * handle on failure. |metadata| is left unchanged on failure.
    */
   PP_FileHandle OpenNaClExecutable([in] PP_Instance instance,
                                    [in] str_t file_url,
                                    [out] uint64_t file_token_lo,
                                    [out] uint64_t file_token_hi);
+
+
+  /* Dispatch a progress event on the DOM element where the given instance is
+   * embedded.
+   */
+  void DispatchEvent([in] PP_Instance instance,
+                     [in] PP_NaClEventType event_type,
+                     [in] PP_Var resource_url,
+                     [in] PP_Bool length_is_computable,
+                     [in] uint64_t loaded_bytes,
+                     [in] uint64_t total_bytes);
 };