DevTools: Fixed suspected bug in port forwarding

chrome/browser/devtools/device/port_forwarding_controller.cc

Index: chrome/browser/devtools/device/port_forwarding_controller.cc
diff --git a/chrome/browser/devtools/device/port_forwarding_controller.cc b/chrome/browser/devtools/device/port_forwarding_controller.cc
index c22789b157fd2ce513c955aa2f39892140b0e517..8efda7d84d5be6c5d908388eb81f7312f498ea02 100644
--- a/chrome/browser/devtools/device/port_forwarding_controller.cc
+++ b/chrome/browser/devtools/device/port_forwarding_controller.cc
@@ -120,8 +120,14 @@ class SocketTunnel : public base::NonThreadSafe {
       return;
     }
 
+    ++pending_writes_; // avoid SelfDestruct in first Pump
     Pump(host_socket_.get(), remote_socket_.get());
-    Pump(remote_socket_.get(), host_socket_.get());
+    --pending_writes_;
+    if (pending_destruction_) {
+      SelfDestruct();
+    } else {
+      Pump(remote_socket_.get(), host_socket_.get());
+    }
   }
 
   void Pump(net::StreamSocket* from, net::StreamSocket* to) {