Reapply r51857 to start building chromoting plugin. Update for ppapi changes.

remoting/client/plugin/pepper_util.h

Index: remoting/client/plugin/pepper_util.h
diff --git a/remoting/client/plugin/pepper_util.h b/remoting/client/plugin/pepper_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..6c6cfb05bf25b6ffd042b0e02f1c37fcdaebef4f
--- /dev/null
+++ b/remoting/client/plugin/pepper_util.h
@@ -0,0 +1,32 @@
+// Copyright (c) 2010 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_CLIENT_PLUGIN_PLUGIN_UTIL_H_
+#define REMOTING_CLIENT_PLUGIN_PLUGIN_UTIL_H_
+
+#include "base/basictypes.h"
+
+#include "third_party/ppapi/cpp/completion_callback.h"
+
+class Task;
+
+namespace remoting {
+
+// Function for adapting a Chromium style Task into a
+// PP_CompletionCallback friendly function.  The Task object should be passed
+// as |user_data|.  This function will invoke Task::Run() on |user_data| when
+// called, and then delete |user_data|.
+void CompletionCallbackTaskAdapter(void* user_data, int32_t not_used);
+
+// Converts a Task* to a pp::CompletionCallback suitable for use with ppapi C++
+// APIs that require a pp::CompletionCallback.  Takes ownership of |task|.
+pp::CompletionCallback TaskToCompletionCallback(Task* task);
+
+// Posts the current task to the plugin's main thread.  Takes ownership of
+// |task|.
+void RunTaskOnPluginThread(Task* task);
+
+}  // namespace remoting
+
+#endif  // REMOTING_CLIENT_PLUGIN_PLUGIN_UTIL_H_