ppapi: PPB_VpnProvider: Implement Resource Stub

ppapi/proxy/ppapi_messages.h

Index: ppapi/proxy/ppapi_messages.h
diff --git a/ppapi/proxy/ppapi_messages.h b/ppapi/proxy/ppapi_messages.h
index c0b3e75c97e27a7d156db8fbbcee7638802156eb..5fc496934aa709b152e61ff737ae78d45d89fa03 100644
--- a/ppapi/proxy/ppapi_messages.h
+++ b/ppapi/proxy/ppapi_messages.h
@@ -1992,6 +1992,35 @@ IPC_MESSAGE_CONTROL3(PpapiPluginMsg_VideoSource_GetFrameReply,
                      PP_TimeTicks /* timestamp */)
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_VideoSource_Close)
 
+// VPN Provider ----------------------------------------------------------------
+IPC_MESSAGE_CONTROL0(PpapiHostMsg_VpnProvider_Create)
+
+// VPN Provider Plugin -> Browser Messages
+IPC_MESSAGE_CONTROL2(PpapiHostMsg_VpnProvider_Bind,
+                     std::string /* configuration_id */,
+                     std::string /* configuration_name */)
+IPC_MESSAGE_CONTROL2(PpapiHostMsg_VpnProvider_SendPacket,
+                     uint32_t /* packet_size */,
+                     uint32_t /* id */)
+
+// VPN Provider Browser -> Plugin Replies
+IPC_MESSAGE_CONTROL3(PpapiPluginMsg_VpnProvider_BindReply,

[bbudge, 2016/05/17 13:34:39]

It looks like you're cribbing from WebSocket. The more common pattern is to
group messages with their reply message. I think it's clearer that way because
it reduces the number of commented groups here. Then you would just have
plugin->browser and browser->plugin groups.

[adrian.belgun, 2016/05/17 15:25:29]

Done.

+                     uint32_t /* queue_depth */,

[bbudge, 2016/05/17 13:34:39]

queue_size

[adrian.belgun, 2016/05/17 15:25:29]

Done.

+                     uint32_t /* max_packet_size */,
+                     int32_t /* status */)
+IPC_MESSAGE_CONTROL1(PpapiPluginMsg_VpnProvider_SendPacketReply,
+                     int32_t /* id */)
+
+// VPN Provider Browser -> Plugin Messages
+IPC_MESSAGE_CONTROL0(PpapiPluginMsg_VpnProvider_OnUnbind)
+IPC_MESSAGE_CONTROL2(PpapiPluginMsg_VpnProvider_OnPacketReceived,
+                     uint32_t /* packet_size */,
+                     uint32_t /* id */)
+
+// VPN Provider Plugin --> Browser Replies
+IPC_MESSAGE_CONTROL1(PpapiHostMsg_VpnProvider_OnPacketReceivedReply,
+                     uint32_t /* id */)
+
 // WebSocket -------------------------------------------------------------------
 
 IPC_MESSAGE_CONTROL0(PpapiHostMsg_WebSocket_Create)