Remove webkit::ppapi::Resource.

webkit/plugins/ppapi/resource.h

-// Copyright (c) 2011 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 WEBKIT_PLUGINS_PPAPI_RESOURCE_H_
-#define WEBKIT_PLUGINS_PPAPI_RESOURCE_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "ppapi/c/pp_resource.h"
-#include "ppapi/shared_impl/resource.h"
-#include "webkit/plugins/ppapi/resource_tracker.h"
-
-namespace webkit {
-namespace ppapi {
-
-class Resource : public ::ppapi::Resource {
- public:
-  explicit Resource(PluginInstance* instance);
-  virtual ~Resource();
-
-  // Returns the instance owning this resource. This is generally to be
-  // non-NULL except if the instance is destroyed and some code internal to the
-  // PPAPI implementation is keeping a reference for some reason.
-  PluginInstance* instance() const { return instance_; }
-
-  // Returns an resource id of this object. If the object doesn't have a
-  // resource id, new one is created with plugin refcount of 1. If it does,
-  // the refcount is incremented. Use this when you need to return a new
-  // reference to the plugin.
-  PP_Resource GetReference();
-
-  // When you need to ensure that a resource has a reference, but you do not
-  // want to increase the refcount (for example, if you need to call a plugin
-  // callback function with a reference), you can use this class. For example:
-  //
-  // plugin_callback(.., ScopedResourceId(resource).id, ...);
-  class ScopedResourceId {
-   public:
-    explicit ScopedResourceId(Resource* resource)
-        : id(resource->GetReference()) {}
-    ~ScopedResourceId() {
-      ResourceTracker::Get()->ReleaseResource(id);
-    }
-    const PP_Resource id;
-  };
-
-  // Resource implementation.
-  virtual void LastPluginRefWasDeleted() OVERRIDE;
-  virtual void InstanceWasDeleted() OVERRIDE;
-
- private:
-  // Non-owning pointer to our instance. See getter above.
-  PluginInstance* instance_;
-
-  DISALLOW_COPY_AND_ASSIGN(Resource);
-};
-
-}  // namespace ppapi
-}  // namespace webkit
-
-#endif  // WEBKIT_PLUGINS_PPAPI_RESOURCE_H_