[PPAPI] Implement an IOStreamResource for data transmission between plugin and renderer.

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 1386 matching lines @@
 // Graphics2D, plugin -> host -> plugin
 IPC_MESSAGE_CONTROL1(PpapiHostMsg_Graphics2D_Flush,
                      ppapi::ViewData /* view_data */)
 IPC_MESSAGE_CONTROL0(PpapiPluginMsg_Graphics2D_FlushAck)
 
 IPC_MESSAGE_CONTROL2(PpapiHostMsg_Graphics2D_ReadImageData,
                      PP_Resource /* image */,
                      PP_Point /* top_left */)
 IPC_MESSAGE_CONTROL0(PpapiPluginMsg_Graphics2D_ReadImageDataAck)
 
+// IOStreamResource  -----------------------------------------------------------
+IPC_MESSAGE_CONTROL1(PpapiHostMsg_IOStream_Init,
+                     uint32_t /* size */)
+IPC_MESSAGE_CONTROL1(PpapiPluginMsg_IOStream_Init,
+                     uint32_t /* size */)
+IPC_MESSAGE_CONTROL1(PpapiHostMsg_IOStream_MoveLimit,
+                     uint32_t /* offset */)
+IPC_MESSAGE_CONTROL1(PpapiPluginMsg_IOStream_MoveLimit,
+                     uint32_t /* offset */)
+
 // IsolatedFileSystem
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_IsolatedFileSystem_Create)
 IPC_MESSAGE_CONTROL1(PpapiHostMsg_IsolatedFileSystem_BrowserOpen,
                      PP_IsolatedFileSystemType_Private /* type */)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_IsolatedFileSystem_BrowserOpenReply,
                      std::string /* fsid */)
 
 // NetworkMonitor.
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_NetworkMonitor_Create)
 IPC_MESSAGE_CONTROL1(PpapiPluginMsg_NetworkMonitor_NetworkList,
@@ skipping 594 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)