Add ability to create pending resource hosts.

ppapi/host/ppapi_host.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 PPAPI_HOST_PPAPI_HOST_H_
 #define PPAPI_HOST_PPAPI_HOST_H_
 
 #include <map>
 
 #include "base/compiler_specific.h"
@@ skipping 43 matching lines @@
   // Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
 
   // Sends the given reply message to the plugin.
   void SendReply(const ReplyMessageContext& context,
                  const IPC::Message& msg);
 
   // Sends the given unsolicited reply message to the plugin.
   void SendUnsolicitedReply(PP_Resource resource, const IPC::Message& msg);
 
+  // Adds the given host resource as a pending one (with no corresponding
+  // PluginResource object and no PP_Resource ID yet). The pending resource ID
+  // is returned. See PpapiHostMsg_AttachToPendingHost.
+  int AddPendingResourceHost(scoped_ptr<ResourceHost> resource_host);
+
   // Adds the given host factory filter to the host. The PpapiHost will take
   // ownership of the pointer.
   void AddHostFactoryFilter(scoped_ptr<HostFactory> filter);
 
   // Adds the given message filter to the host. The PpapiHost will take
   // ownership of the pointer.
   void AddInstanceMessageFilter(scoped_ptr<InstanceMessageFilter> filter);
 
   // Returns null if the resource doesn't exist.
   host::ResourceHost* GetResourceHost(PP_Resource resource) const;
 
  private:
   friend class InstanceMessageFilter;
 
   void HandleResourceCall(
       const proxy::ResourceMessageCallParams& params,
       const IPC::Message& nested_msg,
       HostMessageContext* context);
 
   // Message handlers.
   void OnHostMsgResourceCall(const proxy::ResourceMessageCallParams& params,
                              const IPC::Message& nested_msg);
   void OnHostMsgResourceSyncCall(
       const proxy::ResourceMessageCallParams& params,
       const IPC::Message& nested_msg,
       IPC::Message* reply_msg);
   void OnHostMsgResourceCreated(const proxy::ResourceMessageCallParams& param,
                                 PP_Instance instance,
                                 const IPC::Message& nested_msg);
+  void OnHostMsgAttachToPendingHost(PP_Resource resource, int pending_host_id);
   void OnHostMsgResourceDestroyed(PP_Resource resource);
 
   // Non-owning pointer.
   IPC::Sender* sender_;
 
   PpapiPermissions permissions_;
 
   // Filters for resource creation messages. Note that since we don't support
   // deleting these dynamically we don't need to worry about modifications
   // during iteration. If we add that capability, this should be replaced with
   // an ObserverList.
   ScopedVector<HostFactory> host_factory_filters_;
 
   // Filters for instance messages. Note that since we don't support deleting
   // these dynamically we don't need to worry about modifications during
   // iteration. If we add that capability, this should be replaced with an
   // ObserverList.
   ScopedVector<InstanceMessageFilter> instance_message_filters_;
 
   typedef std::map<PP_Resource, linked_ptr<ResourceHost> > ResourceMap;
   ResourceMap resources_;
 
+  // Resources that have been created in the host and have not yet had the
+  // corresponding PluginResource associated with them.
+  // See PpapiHostMsg_AttachToPendingHost.
+  typedef std::map<int, linked_ptr<ResourceHost> > PendingHostResourceMap;
+  PendingHostResourceMap pending_resource_hosts_;
+  int next_pending_resource_host_id_;
+
   DISALLOW_COPY_AND_ASSIGN(PpapiHost);
 };
 
 }  // namespace host
 }  // namespace ppapi
 
 #endif  // PPAPI_HOST_PPAPIE_HOST_H_