Add IPC Channel for new ManifestService.

ppapi/nacl_irt/manifest_service.h

Index: ppapi/nacl_irt/manifest_service.h
diff --git a/ppapi/nacl_irt/manifest_service.h b/ppapi/nacl_irt/manifest_service.h
new file mode 100644
index 0000000000000000000000000000000000000000..ce15add9d62d16ee9a630a80502c35cacf3f2af3
--- /dev/null
+++ b/ppapi/nacl_irt/manifest_service.h
@@ -0,0 +1,41 @@
+// Copyright 2014 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 PPAPI_NACL_IRT_MANIFEST_SERVICE_H_
+#define PPAPI_NACL_IRT_MANIFEST_SERVICE_H_
+
+#include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+
+namespace base {
+class MessageLoopProxy;
+class WaitableEvent;
+}  // namespace base
+
+namespace IPC {
+struct ChannelHandle;
+class ChannelProxy;
+class SyncMessageFilter;
+}  // namespace IPC
+
+namespace ppapi {
+
+class ManifestService {
+ public:
+  ManifestService(const IPC::ChannelHandle& handle,
+                  scoped_refptr<base::MessageLoopProxy> io_message_loop,
+                  base::WaitableEvent* shutdown_event);
+  ~ManifestService();
+
+ private:
+  scoped_ptr<IPC::ChannelProxy> channel_;
+  scoped_refptr<IPC::SyncMessageFilter> filter_;
+
+  DISALLOW_COPY_AND_ASSIGN(ManifestService);
+};
+
+}  // namespace ppapi
+
+#endif  // PPAPI_NACL_IRT_MANIFEST_SERVICE_H_