Make the Pepper TCP open the firewall on Cros.

content/browser/renderer_host/pepper/pepper_tcp_socket_message_filter.cc

Index: content/browser/renderer_host/pepper/pepper_tcp_socket_message_filter.cc
diff --git a/content/browser/renderer_host/pepper/pepper_tcp_socket_message_filter.cc b/content/browser/renderer_host/pepper/pepper_tcp_socket_message_filter.cc
index aa63ab16308c0460405505cc639b591e355ec426..84a0f349fb9a087039fcf2869a849e9db2d343c9 100644
--- a/content/browser/renderer_host/pepper/pepper_tcp_socket_message_filter.cc
+++ b/content/browser/renderer_host/pepper/pepper_tcp_socket_message_filter.cc
@@ -36,6 +36,10 @@
 #include "ppapi/proxy/tcp_socket_resource_base.h"
 #include "ppapi/shared_impl/private/net_address_private_impl.h"
 
+#if defined(OS_CHROMEOS)
+#include "chromeos/network/firewall_hole.h"
+#endif  // defined(OS_CHROMEOS)
+
 using ppapi::NetAddressPrivateImpl;
 using ppapi::host::NetErrorToPepperError;
 using ppapi::proxy::TCPSocketResourceBase;
@@ -470,6 +474,10 @@ int32_t PepperTCPSocketMessageFilter::OnMsgClose(
     return PP_OK;
 
   state_.DoTransition(TCPSocketState::CLOSE, true);
+#if defined(OS_CHROMEOS)
+  // Close the firewall hole, it is no longer needed.
+  firewall_hole_.reset(nullptr);
+#endif  //defined(OS_CHROMEOS)
   // Make sure we get no further callbacks from |socket_| or |ssl_socket_|.
   if (socket_) {
     socket_->Close();
@@ -713,8 +721,7 @@ void PepperTCPSocketMessageFilter::DoListen(
   }
 
   int32_t pp_result = NetErrorToPepperError(socket_->Listen(backlog));
-  SendListenReply(context, pp_result);
-  state_.DoTransition(TCPSocketState::LISTEN, pp_result == PP_OK);
+  MaybeOpenFirewallHole(context, pp_result);
 }
 
 void PepperTCPSocketMessageFilter::OnResolveCompleted(
@@ -926,6 +933,37 @@ void PepperTCPSocketMessageFilter::OnWriteCompleted(
   write_buffer_base_ = NULL;
 }
 
+void PepperTCPSocketMessageFilter::MaybeOpenFirewallHole(
+    const ppapi::host::ReplyMessageContext& context, int32_t pp_result){
+#if defined(OS_CHROMEOS)
+  if (pp_result == PP_OK) {
+    // punch hole.
+    pepper_socket_utils::FirewallHoleOpenCallback callback =
+        base::Bind(&PepperTCPSocketMessageFilter::OnFirewallHoleOpened,
+                   base::Unretained(this), context, pp_result);
+    if (pepper_socket_utils::OpenFirewallHole(bind_input_addr_, callback)) {
+      // Firewall hole is opening, state transition will happen in the callback.
+      return;
+    }
+  }
+#endif
+  SendListenReply(context, pp_result);
+  state_.DoTransition(TCPSocketState::LISTEN, pp_result == PP_OK);
+}
+
+#if defined(OS_CHROMEOS)
+void PepperTCPSocketMessageFilter::OnFirewallHoleOpened(
+    const ppapi::host::ReplyMessageContext& context, int32_t result,
+    scoped_ptr<chromeos::FirewallHole> hole) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+
+  LOG_IF(WARNING, !hole.get()) << "Firewall hole could not be opened.";
+  firewall_hole_ = hole.Pass();
+  SendListenReply(context, result);
+  state_.DoTransition(TCPSocketState::LISTEN, result == PP_OK);
+}
+#endif  // defined(OS_CHROMEOS)
+
 void PepperTCPSocketMessageFilter::OnAcceptCompleted(
     const ppapi::host::ReplyMessageContext& context,
     int net_result) {