PPAPI: Make GetProxiedInterface not re-enter the plugin

ppapi/proxy/host_dispatcher.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_PROXY_HOST_DISPATCHER_H_
 #define PPAPI_PROXY_HOST_DISPATCHER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 104 matching lines @@
 
  protected:
   // Overridden from Dispatcher.
   virtual void OnInvalidMessageReceived();
 
  private:
   void OnHostMsgLogWithSource(PP_Instance instance,
                               int int_log_level,
                               const std::string& source,
                               const std::string& value);
+  void OnHostMsgPluginSupportsInterface(const std::string& interface_name);
 
   void RemoveSyncMessageStatusObserver(SyncMessageStatusObserver* obs);
 
   PP_Module pp_module_;
 
   // Maps interface name to whether that interface is supported. If an interface
   // name is not in the map, that implies that we haven't queried for it yet.
   typedef base::hash_map<std::string, bool> PluginSupportedMap;
   PluginSupportedMap plugin_supported_;
 
@@ skipping 29 matching lines @@
  private:
   HostDispatcher* dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedModuleReference);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_HOST_DISPATCHER_H_