Change HostResolver::Resolve() to take an std::unique_ptr<Request>* rather than a RequestHandle*

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 459e5c3fcbb3147890fdc2378aafffb78fb6b5de..87b2764cc0c187feff7c22119a33d1b5b8f96cc3 100644
--- a/chrome/browser/devtools/device/port_forwarding_controller.cc
+++ b/chrome/browser/devtools/device/port_forwarding_controller.cc
@@ -66,15 +66,15 @@ class SocketTunnel : public base::NonThreadSafe {
         pending_destruction_(false) {
     host_resolver_ = net::HostResolver::CreateDefaultResolver(nullptr);
     net::HostResolver::RequestInfo request_info(net::HostPortPair(host, port));
+    std::unique_ptr<net::HostResolver::Request> request;

[mmenke, 2016/07/21 16:00:40]

You don't need this - if result != ERR_IO_PENDING, then host_reolver_->Resolve
doesn't modify its request parameter, anyways.

[maksims (do not use this acc), 2016/07/22 10:16:00]

Done.

     int result = host_resolver_->Resolve(
-        request_info,
-        net::DEFAULT_PRIORITY,
-        &address_list_,
-        base::Bind(&SocketTunnel::OnResolved, base::Unretained(this)),
-        nullptr,
+        request_info, net::DEFAULT_PRIORITY, &address_list_,
+        base::Bind(&SocketTunnel::OnResolved, base::Unretained(this)), &request,
         net::BoundNetLog());
     if (result != net::ERR_IO_PENDING)
       OnResolved(result);
+    else if (result == net::ERR_IO_PENDING)
+      request_ = std::move(request);
   }
 
   void OnResolved(int result) {
@@ -186,6 +186,7 @@ class SocketTunnel : public base::NonThreadSafe {
   std::unique_ptr<net::StreamSocket> remote_socket_;
   std::unique_ptr<net::StreamSocket> host_socket_;
   std::unique_ptr<net::HostResolver> host_resolver_;
+  std::unique_ptr<net::HostResolver::Request> request_;
   net::AddressList address_list_;
   int pending_writes_;
   bool pending_destruction_;