Use Mojo pipes to signal sync IPC events

components/nacl/loader/nacl_main.cc

Index: components/nacl/loader/nacl_main.cc
diff --git a/components/nacl/loader/nacl_main.cc b/components/nacl/loader/nacl_main.cc
index 5809dcae852abce008c98e62b0ce85829428636d..64a4f9e59c12d9a88e59613046081ad5b77fff7a 100644
--- a/components/nacl/loader/nacl_main.cc
+++ b/components/nacl/loader/nacl_main.cc
@@ -14,11 +14,15 @@
 #include "components/nacl/loader/nacl_main_platform_delegate.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
+#include "mojo/edk/embedder/embedder.h"
 
 // main() routine for the NaCl loader process.
 int NaClMain(const content::MainFunctionParams& parameters) {
   const base::CommandLine& parsed_command_line = parameters.command_line;
 
+  // The Mojo EDK must be initialized before using IPC.
+  mojo::edk::Init();
+
   // The main thread of the plugin services IO.
   base::MessageLoopForIO main_message_loop;
   base::PlatformThread::SetName("CrNaClMain");