Hook up the PPB_Flash_Print interface to new host system.

ppapi/host/instance_message_filter.cc

Index: ppapi/host/instance_message_filter.cc
diff --git a/ppapi/host/instance_message_filter.cc b/ppapi/host/instance_message_filter.cc
new file mode 100644
index 0000000000000000000000000000000000000000..229235f99c03629448bc0cc014e408c0e01500e3
--- /dev/null
+++ b/ppapi/host/instance_message_filter.cc
@@ -0,0 +1,19 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/host/instance_message_filter.h"
+
+#include "ppapi/host/ppapi_host.h"
+
+namespace ppapi {
+namespace host {
+
+InstanceMessageFilter::InstanceMessageFilter(PpapiHost* host) : host_(host) {
+}
+
+InstanceMessageFilter::~InstanceMessageFilter() {
+}
+
+}  // namespace host
+}  // namespace ppapi