Add support for ProxyResolverErrorObserver to ProxyResolverMojo.

net/proxy/in_process_mojo_proxy_resolver_factory.cc

 // Copyright 2015 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.
 
 #include "net/proxy/in_process_mojo_proxy_resolver_factory.h"
 
 #include "base/memory/singleton.h"
 #include "net/proxy/mojo_proxy_resolver_factory_impl.h"
 
 namespace net {
@@ skipping 12 matching lines @@
 }
 
 InProcessMojoProxyResolverFactory::~InProcessMojoProxyResolverFactory() =
     default;
 
 scoped_ptr<base::ScopedClosureRunner>
 InProcessMojoProxyResolverFactory::CreateResolver(
     const mojo::String& pac_script,
     mojo::InterfaceRequest<interfaces::ProxyResolver> req,
     interfaces::HostResolverPtr host_resolver,
+    interfaces::ProxyResolverErrorObserverPtr error_observer,
     interfaces::ProxyResolverFactoryRequestClientPtr client) {
   factory_->CreateResolver(pac_script, req.Pass(), host_resolver.Pass(),
-                           client.Pass());
+                           error_observer.Pass(), client.Pass());
   return nullptr;
 }
 
 }  // namespace net