Add LoadState reporting to the mojo proxy resolver.

net/proxy/mojo_proxy_resolver_impl.h

 // 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.
 
 #ifndef NET_PROXY_MOJO_PROXY_RESOLVER_IMPL_H_
 #define NET_PROXY_MOJO_PROXY_RESOLVER_IMPL_H_
 
+#include <map>
 #include <queue>
 #include <set>
 
 #include "base/memory/scoped_ptr.h"
 #include "net/interfaces/proxy_resolver_service.mojom.h"
+#include "net/proxy/proxy_resolver.h"
 
 namespace net {
 
-class ProxyResolver;
-
 class MojoProxyResolverImpl : public interfaces::ProxyResolver {
  public:
   explicit MojoProxyResolverImpl(scoped_ptr<net::ProxyResolver> resolver);
 
   ~MojoProxyResolverImpl() override;
 
+  // Invoked when the LoadState of a request changes.
+  void LoadStateChanged(net::ProxyResolver::RequestHandle handle,
+                        LoadState load_state);
+
  private:
   class Job;
   struct SetPacScriptRequest;
 
   // interfaces::ProxyResolver overrides.
   void SetPacScript(const mojo::String& data,
                     const mojo::Callback<void(int32_t)>& callback) override;
   void GetProxyForUrl(
       const mojo::String& url,
       interfaces::ProxyResolverRequestClientPtr client) override;
 
-  void DeleteJob(Job* job);
+  void DeleteJob(Job* job, net::ProxyResolver::RequestHandle handle);
 
   void StartSetPacScript();
   void SetPacScriptDone(int result);
 
   scoped_ptr<net::ProxyResolver> resolver_;
   std::set<Job*> resolve_jobs_;
+  std::map<net::ProxyResolver::RequestHandle, Job*> request_handle_to_job_;
 
   std::queue<SetPacScriptRequest> set_pac_script_requests_;
 
   DISALLOW_COPY_AND_ASSIGN(MojoProxyResolverImpl);
 };
 
 }  // namespace net
 
 #endif  // NET_PROXY_MOJO_PROXY_RESOLVER_IMPL_H_