Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/src/shared/ppapi_proxy/plugin_ppb_scrollbar.h

+// Copyright (c) 2011 The Native Client 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 NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_PPB_SCROLLBAR_H_
+#define NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_PPB_SCROLLBAR_H_
+
+#include "native_client/src/include/nacl_macros.h"
+#include "ppapi/c/dev/ppb_scrollbar_dev.h"
+
+namespace ppapi_proxy {
+
+// Implements the untrusted side of the PPB_Scrollbar_Dev interface.
+class PluginScrollbar {
+ public:
+  PluginScrollbar();
+  static const PPB_Scrollbar_Dev* GetInterface();
+
+ private:
+  NACL_DISALLOW_COPY_AND_ASSIGN(PluginScrollbar);
+};
+
+}  // namespace ppapi_proxy
+
+#endif  // NATIVE_CLIENT_SRC_SHARED_PPAPI_PROXY_PLUGIN_PPB_SCROLLBAR_H_
+