Pepper: Move DoPostMessage out of trusted plugin.

components/nacl/renderer/ppb_nacl_private_impl.cc

Index: components/nacl/renderer/ppb_nacl_private_impl.cc
diff --git a/components/nacl/renderer/ppb_nacl_private_impl.cc b/components/nacl/renderer/ppb_nacl_private_impl.cc
index e5249445644f858a2a204c6dc572e5d3924050de..cf42d203dabba855bc804581d0cb592ee2ac6272 100644
--- a/components/nacl/renderer/ppb_nacl_private_impl.cc
+++ b/components/nacl/renderer/ppb_nacl_private_impl.cc
@@ -40,6 +40,7 @@
 #include "ppapi/shared_impl/ppapi_permissions.h"
 #include "ppapi/shared_impl/ppapi_preferences.h"
 #include "ppapi/shared_impl/var.h"
+#include "ppapi/shared_impl/var_tracker.h"
 #include "ppapi/thunk/enter.h"
 #include "third_party/WebKit/public/platform/WebURLLoader.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
@@ -1177,6 +1178,23 @@ PP_Bool GetPNaClResourceInfo(PP_Instance instance,
   return PP_TRUE;
 }
 
+void PostMessageToJavaScriptMainThread(PP_Instance instance,
+                                       const std::string& message) {
+  content::PepperPluginInstance* plugin_instance =
+      content::PepperPluginInstance::Get(instance);
+  if (plugin_instance) {
+    PP_Var message_var = ppapi::StringVar::StringToPPVar(message);
+    plugin_instance->PostMessageToJavaScript(message_var);
+    ppapi::PpapiGlobals::Get()->GetVarTracker()->ReleaseVar(message_var);
+  }
+}
+
+void PostMessageToJavaScript(PP_Instance instance, const char* message) {
+  ppapi::PpapiGlobals::Get()->GetMainThreadMessageLoop()->PostTask(
+      FROM_HERE,
+      base::Bind(&PostMessageToJavaScriptMainThread, instance, message));
+}
+
 const PPB_NaCl_Private nacl_interface = {
   &LaunchSelLdr,
   &StartPpapiProxy,