Introduce PPB_Flash_MessageLoop interface for Pepper Flash.

ppapi/cpp/private/flash_message_loop.h

Index: ppapi/cpp/private/flash_message_loop.h
diff --git a/ppapi/cpp/private/flash_message_loop.h b/ppapi/cpp/private/flash_message_loop.h
new file mode 100644
index 0000000000000000000000000000000000000000..de2af45ce1db1d97a512f794292267890e81c01b
--- /dev/null
+++ b/ppapi/cpp/private/flash_message_loop.h
@@ -0,0 +1,31 @@
+// 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.
+
+#ifndef PPAPI_CPP_PRIVATE_FLASH_MESSAGE_LOOP_H_
+#define PPAPI_CPP_PRIVATE_FLASH_MESSAGE_LOOP_H_
+
+#include "ppapi/c/pp_stdint.h"
+#include "ppapi/cpp/resource.h"
+
+namespace pp {
+
+class Instance;
+
+namespace flash {
+
+class MessageLoop : public Resource {
+ public:
+  explicit MessageLoop(Instance* instance);
+  virtual ~MessageLoop();
+
+  static bool IsAvailable();
+
+  int32_t Run();
+  void Quit();
+};
+
+}  // namespace flash
+}  // namespace pp
+
+#endif  // PPAPI_CPP_PRIVATE_FLASH_MESSAGE_LOOP_H_