Delete athena/

athena/main/athena_renderer_pdf_helper.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_RENDERER_PDF_HELPER_H_
-#define ATHENA_MAIN_ATHENA_RENDERER_PDF_HELPER_H_
-
-#include "content/public/renderer/render_frame_observer.h"
-
-namespace athena {
-
-class AthenaRendererPDFHelper : public content::RenderFrameObserver {
- public:
-  explicit AthenaRendererPDFHelper(content::RenderFrame* frame);
-  ~AthenaRendererPDFHelper() override;
-
- private:
-  // RenderFrameObserver:
-  virtual void DidCreatePepperPlugin(
-      content::RendererPpapiHost* host) override;
-
-  DISALLOW_COPY_AND_ASSIGN(AthenaRendererPDFHelper);
-};
-
-}  // namespace athena
-
-#endif  // ATHENA_MAIN_ATHENA_RENDERER_PDF_HELPER_H_