PPAPI: Make GetProxiedInterface not re-enter the plugin

ppapi/proxy/ppapi_messages.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.
 
 // Multiply-included message header, no traditional include guard.
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 468 matching lines @@
 IPC_SYNC_MESSAGE_CONTROL1_1(PpapiMsg_ReserveInstanceId,
                             PP_Instance /* instance */,
                             bool /* usable */)
 
 // Passes the WebKit preferences to the plugin.
 IPC_MESSAGE_CONTROL1(PpapiMsg_SetPreferences,
                      ppapi::Preferences)
 
 // Sent in both directions to see if the other side supports the given
 // interface.
-IPC_SYNC_MESSAGE_CONTROL1_1(PpapiMsg_SupportsInterface,
+IPC_SYNC_MESSAGE_CONTROL1_1(PpapiMsg_IsInterfaceSupported,
                             std::string /* interface_name */,
                             bool /* result */)
+// Sent by the plugin side of the proxy to inform the renderer that a given
+// plugin interface (PPP_*) is supported.
+IPC_MESSAGE_CONTROL1(PpapiHostMsg_PluginSupportsInterface,
+                     std::string /* interface_name */)
 
 IPC_MESSAGE_CONTROL1(PpapiHostMsg_LogInterfaceUsage,
                      int /* interface_hash */)
 
 #if !defined(OS_NACL) && !defined(NACL_WIN64)
 // Network state notification from the browser for implementing
 // PPP_NetworkState_Dev.
 IPC_MESSAGE_CONTROL1(PpapiMsg_SetNetworkState,
                      bool /* online */)
 
@@ skipping 670 matching lines @@
 // PPB_Testing.
 IPC_SYNC_MESSAGE_ROUTED3_1(
     PpapiHostMsg_PPBTesting_ReadImageData,
     ppapi::HostResource /* device_context_2d */,
     ppapi::HostResource /* image */,
     PP_Point /* top_left */,
     PP_Bool /* result */)
 IPC_SYNC_MESSAGE_ROUTED1_1(PpapiHostMsg_PPBTesting_GetLiveObjectsForInstance,
                            PP_Instance /* instance */,
                            uint32 /* result */)
-IPC_SYNC_MESSAGE_ROUTED2_0(PpapiHostMsg_PPBTesting_SimulateInputEvent,
-                           PP_Instance /* instance */,
-                           ppapi::InputEventData /* input_event */)
+IPC_MESSAGE_ROUTED2(PpapiHostMsg_PPBTesting_SimulateInputEvent,
+                    PP_Instance /* instance */,
+                    ppapi::InputEventData /* input_event */)
 IPC_SYNC_MESSAGE_ROUTED1_0(
     PpapiHostMsg_PPBTesting_SetMinimumArrayBufferSizeForShmem,
     uint32_t /* threshold */)
 
 #if !defined(OS_NACL) && !defined(NACL_WIN64)
 
 // PPB_VideoDecoder_Dev.
 // (Messages from plugin to renderer.)
 IPC_SYNC_MESSAGE_ROUTED3_1(PpapiHostMsg_PPBVideoDecoder_Create,
                            PP_Instance /* instance */,
@@ skipping 1073 matching lines @@
 IPC_MESSAGE_CONTROL1(PpapiHostMsg_Talk_RequestPermission,
                      PP_TalkPermission /* permission */)
 IPC_MESSAGE_CONTROL0(PpapiPluginMsg_Talk_RequestPermissionReply)
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_Talk_StartRemoting)
 IPC_MESSAGE_CONTROL0(PpapiPluginMsg_Talk_StartRemotingReply)
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_Talk_StopRemoting)
 IPC_MESSAGE_CONTROL0(PpapiPluginMsg_Talk_StopRemotingReply)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_Talk_NotifyEvent, PP_TalkEvent /* event */)
 
 #endif  // !defined(OS_NACL) && !defined(NACL_WIN64)