Boilerplate implementation of the Pepper URL Loader API....

webkit/glue/plugins/pepper_resource_tracker.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 WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_
 #define WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_
 
 #include <set>
 
 #include "base/atomic_sequence_num.h"
 #include "base/basictypes.h"
 #include "base/lock.h"
 #include "base/ref_counted.h"
 #include "base/singleton.h"
 #include "third_party/ppapi/c/pp_resource.h"
 
 namespace pepper {
 
 class Buffer;
 class DeviceContext2D;
 class ImageData;
 class Resource;
+class URLLoader;
+class URLRequestInfo;
+class URLResponseInfo;
 
 // This class maintains a global list of all live pepper resources. It allows
 // us to check resource ID validity and to map them to a specific module.
 //
 // This object is threadsafe.
 class ResourceTracker {
  public:
   // Returns the pointer to the singleton object.
   static ResourceTracker* Get();
 
   // The returned pointer will be NULL if there is no resource. Note that this
   // return value is a scoped_refptr so that we ensure the resource is valid
   // from the point of the loopkup to the point that the calling code needs it.
   // Otherwise, the plugin could Release() the resource on another thread and
   // the object will get deleted out from under us.
   scoped_refptr<Resource> GetResource(PP_Resource res) const;
 
   // Adds the given resource to the tracker and assigns it a resource ID. The
   // assigned resource ID will be returned.
   void AddResource(Resource* resource);
 
   void DeleteResource(Resource* resource);
 
   // Helpers for converting resources to a specific type. Returns NULL if the
   // resource is invalid or is a different type.
   scoped_refptr<DeviceContext2D> GetAsDeviceContext2D(PP_Resource res) const;
   scoped_refptr<ImageData> GetAsImageData(PP_Resource res) const;
+  scoped_refptr<URLLoader> GetAsURLLoader(PP_Resource res) const;
+  scoped_refptr<URLRequestInfo> GetAsURLRequestInfo(PP_Resource res) const;
+  scoped_refptr<URLResponseInfo> GetAsURLResponseInfo(PP_Resource res) const;
   scoped_refptr<Buffer> GetAsBuffer(PP_Resource res) const;
 
  private:
   friend struct DefaultSingletonTraits<ResourceTracker>;
 
   ResourceTracker();
   ~ResourceTracker();
 
   // Hold this lock when accessing this object's members.
   mutable Lock lock_;
 
   typedef std::set<Resource*> ResourceSet;
   ResourceSet live_resources_;
 
   DISALLOW_COPY_AND_ASSIGN(ResourceTracker);
 };
 
 }  // namespace pepper
 
 #endif  // WEBKIT_GLUE_PLUGINS_PEPPER_RESOURCE_TRACKER_H_