Remove unused in-process pepper APIs

ppapi/cpp/dev/zoom_dev.h

-// 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 PPAPI_CPP_DEV_ZOOM_DEV_H_
-#define PPAPI_CPP_DEV_ZOOM_DEV_H_
-
-#include <string>
-
-#include "ppapi/c/dev/ppp_zoom_dev.h"
-#include "ppapi/cpp/instance_handle.h"
-
-namespace pp {
-
-class Instance;
-
-// This class allows you to associate the PPP_Zoom_Dev and PPB_Zoom_Dev C-based
-// interfaces with an object. It associates itself with the given instance, and
-// registers as the global handler for handling the PPP_Zoom_Dev interface that
-// the browser calls.
-//
-// You would typically use this either via inheritance on your instance:
-//   class MyInstance : public pp::Instance, public pp::Zoom_Dev {
-//     class MyInstance() : pp::Zoom_Dev(this) {
-//     }
-//     ...
-//   };
-//
-// or by composition:
-//   class MyZoom : public pp::Zoom_Dev {
-//     ...
-//   };
-//
-//   class MyInstance : public pp::Instance {
-//     MyInstance() : zoom_(this) {
-//     }
-//
-//     MyZoom zoom_;
-//   };
-class Zoom_Dev {
- public:
-  explicit Zoom_Dev(Instance* instance);
-  virtual ~Zoom_Dev();
-
-  // PPP_Zoom_Dev functions exposed as virtual functions for you to
-  // override.
-  virtual void Zoom(double factor, bool text_only) = 0;
-
-  // PPB_Zoom_Def functions for you to call to report new zoom factor.
-  void ZoomChanged(double factor);
-  void ZoomLimitsChanged(double minimum_factor, double maximium_factor);
-
- private:
-  InstanceHandle associated_instance_;
-};
-
-}  // namespace pp
-
-#endif  // PPAPI_CPP_DEV_ZOOM_DEV_H_