Var serialization-related proxy stuff. This allows vars to be sent over IPC...

ppapi/proxy/plugin_var_serialization_rules.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_PROXY_PLUGIN_VAR_SERIALIZATION_RULES_H_
+#define PPAPI_PROXY_PLUGIN_VAR_SERIALIZATION_RULES_H_
+
+#include "base/basictypes.h"
+#include "ppapi/proxy/var_serialization_rules.h"
+
+namespace pp {
+namespace proxy {
+
+class PluginVarTracker;
+
+// Implementation of the VarSerialization interface for the plugin.
+class PluginVarSerializationRules : public VarSerializationRules {
+ public:
+  // This class will use the given non-owning pointer to the var tracker to
+  // handle object refcounting and string conversion.
+  PluginVarSerializationRules(PluginVarTracker* tracker);
+  ~PluginVarSerializationRules();
+
+  // VarSerialization implementation.
+  virtual void SendCallerOwned(const PP_Var& var, std::string* str_val);
+  virtual PP_Var BeginReceiveCallerOwned(const PP_Var& var,
+                                         const std::string* str_val);
+  virtual void EndReceiveCallerOwned(const PP_Var& var);
+  virtual PP_Var ReceivePassRef(const PP_Var& var,
+                                const std::string& str_val);
+  virtual void BeginSendPassRef(const PP_Var& var, std::string* str_val);
+  virtual void EndSendPassRef(const PP_Var& var);
+  virtual void ReleaseObjectRef(const PP_Var& var);
+
+ private:
+  PluginVarTracker* var_tracker_;
+
+  DISALLOW_COPY_AND_ASSIGN(PluginVarSerializationRules);
+};
+
+}  // namespace proxy
+}  // namespace pp
+
+#endif  // PPAPI_PROXY_PLUGIN_VAR_SERIALIZATION_RULES_H_