Split host plugin into multiple files.

remoting/host/host_plugin_utils.h

+// Copyright (c) 2011 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.
+
+#ifndef REMOTING_HOST_HOST_PLUGIN_UTILS_H_
+#define REMOTING_HOST_HOST_PLUGIN_UTILS_H_
+
+#include <string>
+
+#include "third_party/npapi/bindings/npapi.h"
+#include "third_party/npapi/bindings/npfunctions.h"
+#include "third_party/npapi/bindings/npruntime.h"
+
+namespace remoting {
+
+// Global netscape functions initialized in NP_Initialize.
+extern NPNetscapeFuncs* g_npnetscape_funcs;
+
+// Convert an NPIdentifier into a std::string.
+std::string StringFromNPIdentifier(NPIdentifier identifier);
+
+// Convert an NPVariant into a std::string.
+std::string StringFromNPVariant(const NPVariant& variant);
+
+// Convert a std::string into an NPVariant.
+// Caller is responsible for making sure that NPN_ReleaseVariantValue is
+// called on returned value.
+NPVariant NPVariantFromString(const std::string& val);
+
+// Convert an NPVariant into an NSPObject.
+NPObject* ObjectFromNPVariant(const NPVariant& variant);
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_HOST_PLUGIN_UTILS_H_