Added API Dart_PostCMessage for posting a Dart_CMessage structure

runtime/bin/eventhandler_win.cc

Index: runtime/bin/eventhandler_win.cc
diff --git a/runtime/bin/eventhandler_win.cc b/runtime/bin/eventhandler_win.cc
index 72311c109ed5a268a98321375b768cf9e353c64c..238b330d0d0456b853088c2031c5064590225e9d 100644
--- a/runtime/bin/eventhandler_win.cc
+++ b/runtime/bin/eventhandler_win.cc
@@ -10,6 +10,7 @@
 #include <mswsock.h>
 
 #include "bin/builtin.h"
+#include "bin/dartutils.h"
 #include "bin/socket.h"
 
 
@@ -641,7 +642,7 @@ void EventHandlerImplementation::HandleInterrupt(InterruptMessage* msg) {
       if ((msg->data & (1 << kInEvent)) != 0) {
         if (handle->Available() > 0) {
           int event_mask = (1 << kInEvent);
-          Dart_PostIntArray(handle->port(), 1, &event_mask);
+          DartUtils::PostInteger(port, event_mask);
         } else if (!handle->HasPendingRead() &&
                    !handle->IsClosedRead()) {
           handle->IssueRead();
@@ -653,7 +654,7 @@ void EventHandlerImplementation::HandleInterrupt(InterruptMessage* msg) {
       if ((msg->data & (1 << kOutEvent)) != 0) {
         if (!handle->HasPendingWrite()) {
           int event_mask = (1 << kOutEvent);
-          Dart_PostIntArray(handle->port(), 1, &event_mask);
+          DartUtils::PostInteger(port, event_mask);
         }
       }
 
@@ -689,7 +690,7 @@ void EventHandlerImplementation::HandleAccept(ListenSocket* listen_socket,
   if (!listen_socket->IsClosing()) {
     int event_mask = 1 << kInEvent;
     if ((listen_socket->mask() & event_mask) != 0) {
-      Dart_PostIntArray(listen_socket->port(), 1, &event_mask);
+      DartUtils::PostInteger(port, event_mask);
     }
   }
 
@@ -702,7 +703,7 @@ void EventHandlerImplementation::HandleAccept(ListenSocket* listen_socket,
 void EventHandlerImplementation::HandleClosed(Handle* handle) {
   if (!handle->IsClosing()) {
     int event_mask = 1 << kCloseEvent;
-    Dart_PostIntArray(handle->port(), 1, &event_mask);
+    DartUtils::PostInteger(port, event_mask);
   }
 }
 
@@ -716,7 +717,7 @@ void EventHandlerImplementation::HandleRead(Handle* handle,
     if (!handle->IsClosing()) {
       int event_mask = 1 << kInEvent;
       if ((handle->mask() & event_mask) != 0) {
-        Dart_PostIntArray(handle->port(), 1, &event_mask);
+        DartUtils::PostInteger(port, event_mask);
       }
     }
   } else {
@@ -740,7 +741,7 @@ void EventHandlerImplementation::HandleWrite(Handle* handle,
     if (!handle->IsClosing()) {
       int event_mask = 1 << kOutEvent;
       if ((handle->mask() & event_mask) != 0) {
-        Dart_PostIntArray(handle->port(), 1, &event_mask);
+        DartUtils::PostInteger(port, event_mask);
       }
     }
   } else {
@@ -756,7 +757,7 @@ void EventHandlerImplementation::HandleWrite(Handle* handle,
 
 void EventHandlerImplementation::HandleTimeout() {
   // TODO(sgjesse) check if there actually is a timeout.
-  Dart_PostIntArray(timeout_port_, 0, NULL);
+  DartUtils::PostNull(timeout_port_);
   timeout_ = kInfinityTimeout;
   timeout_port_ = 0;
 }