NaCl: clean up nexe loading logic in trusted plugin.

ppapi/native_client/src/trusted/plugin/plugin.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.
 
 #include "ppapi/native_client/src/trusted/plugin/plugin.h"
 
 #include <sys/stat.h>
 #include <sys/types.h>
 
 #include <string>
@@ skipping 93 matching lines @@
   PP_NaClFileInfo info;
   info.handle = file_handle;
   info.token_lo = 0;
   info.token_hi = 0;
 
   // Now actually load the nexe, which can happen on a background thread.
   //
   // We can't use pp::BlockUntilComplete() inside an in-process plugin, so we
   // have to roll our own blocking logic, similar to WaitForSelLdrStart()
   // above, except without timeout logic.
-  bool nexe_started = false;
-  pp::CompletionCallback nexe_started_callback = callback_factory_.NewCallback(
-      &Plugin::SignalNexeStarted, &nexe_started, service_runtime);
   pp::Module::Get()->core()->CallOnMainThread(
       0,
       callback_factory_.NewCallback(
           &Plugin::LoadNexeAndStart,
-          service_runtime, info, nexe_started_callback));
-  service_runtime->WaitForNexeStart();
-
-  return nexe_started;
+          service_runtime,
+          info));
+  return service_runtime->WaitForNexeStart();
 }
 
 void Plugin::StartSelLdrOnMainThread(int32_t pp_error,
                                      ServiceRuntime* service_runtime,
                                      const SelLdrStartParams& params,
                                      pp::CompletionCallback callback) {
   if (pp_error != PP_OK) {
     PLUGIN_PRINTF(("Plugin::StartSelLdrOnMainThread: non-PP_OK arg "
                    "-- SHOULD NOT HAPPEN\n"));
     pp::Module::Get()->core()->CallOnMainThread(0, callback, pp_error);
     return;
   }
   service_runtime->StartSelLdr(params, callback);
 }
 
 void Plugin::SignalStartSelLdrDone(int32_t pp_error,
                                    bool* started,
                                    ServiceRuntime* service_runtime) {
   *started = (pp_error == PP_OK);
   service_runtime->SignalStartSelLdrDone();
 }
 
-void Plugin::SignalNexeStarted(int32_t pp_error,
-                               bool* started,
-                               ServiceRuntime* service_runtime) {
-  *started = (pp_error == PP_OK);
-  service_runtime->SignalNexeStarted();
-}
-
 void Plugin::LoadNaClModule(PP_NaClFileInfo file_info,
                             bool uses_nonsfi_mode,
                             bool enable_dyncode_syscalls,
                             bool enable_exception_handling,
                             bool enable_crash_throttling,
                             const pp::CompletionCallback& init_done_cb,
                             const pp::CompletionCallback& crash_cb) {
   CHECK(pp::Module::Get()->core()->IsMainThread());
   // Before forking a new sel_ldr process, ensure that we do not leak
   // the ServiceRuntime object for an existing subprocess, and that any
@@ skipping 19 matching lines @@
     error_info.SetReport(
         PP_NACL_ERROR_SEL_LDR_INIT,
         "sel_ldr init failure " + main_subprocess_.description());
     ReportLoadError(error_info);
     return;
   }
 
   // We don't take any action once nexe loading has completed, so pass an empty
   // callback here for |callback|.
   pp::CompletionCallback callback = callback_factory_.NewCallback(
-      &Plugin::LoadNexeAndStart,
-      service_runtime, file_info, pp::CompletionCallback());
+      &Plugin::LoadNexeAndStart, service_runtime, file_info);
   StartSelLdrOnMainThread(
       static_cast<int32_t>(PP_OK), service_runtime, params, callback);
 }
 
 void Plugin::LoadNexeAndStart(int32_t pp_error,
                               ServiceRuntime* service_runtime,
-                              PP_NaClFileInfo file_info,
-                              const pp::CompletionCallback& callback) {
+                              PP_NaClFileInfo file_info) {
   CHECK(pp::Module::Get()->core()->IsMainThread());
   if (pp_error != PP_OK)
     return;
-  service_runtime->LoadNexeAndStart(file_info, callback);
+  service_runtime->LoadNexeAndStart(file_info);
 }
 
 bool Plugin::LoadNaClModuleContinuationIntern() {
   ErrorInfo error_info;
   if (!uses_nonsfi_mode_) {
     if (!main_subprocess_.StartSrpcServices()) {
       // The NaCl process probably crashed. On Linux, a crash causes this
       // error, while on other platforms, the error is detected below, when we
       // attempt to start the proxy. Report a module initialization error here,
       // to make it less confusing for developers.
@@ skipping 308 matching lines @@
 
 void Plugin::SetExitStatusOnMainThread(int32_t pp_error,
                                        int exit_status) {
   DCHECK(pp::Module::Get()->core()->IsMainThread());
   DCHECK(nacl_interface_);
   nacl_interface_->SetExitStatus(pp_instance(), exit_status);
 }
 
 
 }  // namespace plugin