PPAPI: Refactor MessageChannel to prep for sync postMessae

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 044a9afe010306bcaf6ae237d78661d2b1967ac4..6b688765764733b86abc3c5755ab1a508197fed5 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -110,6 +110,10 @@
 #include "ui/base/webui/jstemplate_builder.h"
 #include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
 
+#if !defined(DISABLE_NACL)
+#include "components/nacl/renderer/nacl_helper.h"
+#endif
+
 #if defined(ENABLE_WEBRTC)
 #include "chrome/renderer/media/webrtc_logging_message_filter.h"
 #endif
@@ -398,6 +402,10 @@ void ChromeContentRendererClient::RenderFrameCreated(
   new PepperHelper(render_frame);
 #endif
 
+#if !defined(DISABLE_NACL)
+  new nacl::NaClHelper(render_frame);
+#endif
+
   // TODO(jam): when the frame tree moves into content and parent() works at
   // RenderFrame construction, simplify this by just checking parent().
   if (render_frame->GetRenderView()->GetMainRenderFrame() != render_frame) {