Add an IPC channel between the NaCl loader process and the renderer.

ppapi/native_client/src/trusted/plugin/service_runtime.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.
  */
 
 #define NACL_LOG_MODULE_NAME "Plugin::ServiceRuntime"
 
 #include "native_client/src/trusted/plugin/service_runtime.h"
 
@@ skipping 605 matching lines @@
   if (LOAD_OK != load_status) {
     error_info->SetReport(
         ERROR_SEL_LDR_START_STATUS,
         NaClErrorString(static_cast<NaClErrorCode>(load_status)));
     return false;
   }
   return true;
 }
 
 bool ServiceRuntime::Start(nacl::DescWrapper* nacl_desc,
-                           ErrorInfo* error_info, const nacl::string& url) {
+                           ErrorInfo* error_info,
+                           const nacl::string& url,
+                           void** ipc_channel_handle) {
   PLUGIN_PRINTF(("ServiceRuntime::Start (nacl_desc=%p)\n",
                  reinterpret_cast<void*>(nacl_desc)));
 
 #ifdef NACL_STANDALONE
   nacl::scoped_ptr<nacl::SelLdrLauncherStandalone>
       tmp_subprocess(new nacl::SelLdrLauncherStandalone());
 #else
   nacl::scoped_ptr<SelLdrLauncherChrome>
       tmp_subprocess(new SelLdrLauncherChrome());
 #endif
   if (NULL == tmp_subprocess.get()) {
     PLUGIN_PRINTF(("ServiceRuntime::Start (subprocess create failed)\n"));
     error_info->SetReport(ERROR_SEL_LDR_CREATE_LAUNCHER,
                           "ServiceRuntime: failed to create sel_ldr launcher");
     return false;
   }
 #ifdef NACL_STANDALONE
   bool started = tmp_subprocess->Start(url.c_str());
 #else
-  bool started = tmp_subprocess->Start(plugin_->pp_instance(), url.c_str());
+  bool started = tmp_subprocess->Start(plugin_->pp_instance(),
+                                       url.c_str(),
+                                       ipc_channel_handle);
 #endif
   if (!started) {
     PLUGIN_PRINTF(("ServiceRuntime::Start (start failed)\n"));
     error_info->SetReport(ERROR_SEL_LDR_LAUNCH,
                           "ServiceRuntime: failed to start");
     return false;
   }
 
   subprocess_.reset(tmp_subprocess.release());
   if (!InitCommunication(nacl_desc, error_info)) {
@@ skipping 78 matching lines @@
   nacl::MutexLocker take(&mu_);
   return exit_status_;
 }
 
 void ServiceRuntime::set_exit_status(int exit_status) {
   nacl::MutexLocker take(&mu_);
   exit_status_ = exit_status & 0xff;
 }
 
 }  // namespace plugin