athena: Add support for PDF

athena/main/athena_content_client.h

+// 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 ATHENA_MAIN_ATHENA_CONTENT_CLIENT_H_
+#define ATHENA_MAIN_ATHENA_CONTENT_CLIENT_H_
+
+#include "extensions/shell/common/shell_content_client.h"
+
+namespace athena {
+
+class AthenaContentClient : public extensions::ShellContentClient {
+ public:
+  AthenaContentClient();
+  virtual ~AthenaContentClient();
+
+ private:
+  // extensions::ShellContentClient:
+  virtual void AddPepperPlugins(
+      std::vector<content::PepperPluginInfo>* plugins) OVERRIDE;
+
+  DISALLOW_COPY_AND_ASSIGN(AthenaContentClient);
+};
+
+}  // namespace athena
+
+#endif  // ATHENA_MAIN_ATHENA_CONTENT_CLIENT_H_