Remove the in-process PDF viewer from pdf/

pdf/fading_control.h

-// 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 PDF_FADING_CONTROL_H_
-#define PDF_FADING_CONTROL_H_
-
-#include "pdf/control.h"
-
-namespace chrome_pdf {
-
-class FadingControl : public Control {
- public:
-  FadingControl();
-  virtual ~FadingControl();
-
-  virtual void OnTimerFired(uint32 timer_id);
-
-  // Fade In/Out control depending on visible flag over the time of time_ms.
-  virtual void Fade(bool visible, uint32 time_ms);
-
-  virtual void OnFadeInComplete() {}
-  virtual void OnFadeOutComplete() {}
-
- private:
-  int alpha_shift_;
-  uint32 timer_id_;
-};
-
-}  // namespace chrome_pdf
-
-#endif  // PDF_FADING_CONTROL_H_