Add setNoDelay method on Socket/RawSocket.

runtime/bin/socket.cc

Index: runtime/bin/socket.cc
diff --git a/runtime/bin/socket.cc b/runtime/bin/socket.cc
index d9c20e7439305bfd0057e3b40d279b80d441678b..4fbdf8b6bacafe5865f1aa4128d5f471df791e1c 100644
--- a/runtime/bin/socket.cc
+++ b/runtime/bin/socket.cc
@@ -445,6 +445,28 @@ void FUNCTION_NAME(Socket_NewServicePort)(Dart_NativeArguments args) {
 }
 
 
+void FUNCTION_NAME(Socket_SetNoDelay)(Dart_NativeArguments args) {
+  Dart_EnterScope();
+  Dart_Handle socket_obj = Dart_GetNativeArgument(args, 0);
+  intptr_t socket = 0;
+  Dart_Handle err = Socket::GetSocketIdNativeField(socket_obj, &socket);
+  if (Dart_IsError(err)) {
+    Dart_SetReturnValue(args, Dart_NewBoolean(false));
+  } else {
+    Dart_Handle enabled_obj = Dart_GetNativeArgument(args, 1);
+    bool enabled;
+    err = Dart_BooleanValue(enabled_obj, &enabled);
+    if (Dart_IsError(err)) {
+      Dart_SetReturnValue(args, Dart_NewBoolean(false));
+    } else {
+      bool result = Socket::SetNoDelay(socket, enabled);
+      Dart_SetReturnValue(args, Dart_NewBoolean(result));
+    }
+  }
+  Dart_ExitScope();
+}
+
+
 Dart_Handle Socket::SetSocketIdNativeField(Dart_Handle socket, intptr_t id) {
   return Dart_SetNativeInstanceField(socket, kSocketIdNativeField, id);
 }