Improve performance of proxy resolver by tracing DNS dependencies.

net/proxy/proxy_service.cc

 // Copyright (c) 2012 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/proxy_service.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 10 matching lines @@
 #include "net/base/net_errors.h"
 #include "net/base/net_log.h"
 #include "net/base/net_util.h"
 #include "net/proxy/dhcp_proxy_script_fetcher.h"
 #include "net/proxy/multi_threaded_proxy_resolver.h"
 #include "net/proxy/network_delegate_error_observer.h"
 #include "net/proxy/proxy_config_service_fixed.h"
 #include "net/proxy/proxy_resolver.h"
 #include "net/proxy/proxy_script_decider.h"
 #include "net/proxy/proxy_script_fetcher.h"
-#include "net/proxy/sync_host_resolver_bridge.h"
 #include "net/url_request/url_request_context.h"
 
 #if defined(OS_WIN)
 #include "net/proxy/proxy_config_service_win.h"
 #include "net/proxy/proxy_resolver_winhttp.h"
 #elif defined(OS_IOS)
 #include "net/proxy/proxy_config_service_ios.h"
 #include "net/proxy/proxy_resolver_mac.h"
 #elif defined(OS_MACOSX)
 #include "net/proxy/proxy_config_service_mac.h"
@@ skipping 146 matching lines @@
 
   virtual void CancelRequest(RequestHandle request) OVERRIDE {
     NOTREACHED();
   }
 
   virtual LoadState GetLoadState(RequestHandle request) const OVERRIDE {
     NOTREACHED();
     return LOAD_STATE_IDLE;
   }
 
-  virtual LoadState GetLoadStateThreadSafe(
-      RequestHandle request) const OVERRIDE {
-    NOTREACHED();
-    return LOAD_STATE_IDLE;
-  }
-
   virtual void CancelSetPacScript() OVERRIDE {
     NOTREACHED();
   }
 
   virtual int SetPacScript(
       const scoped_refptr<ProxyResolverScriptData>& /*script_data*/,
       const CompletionCallback& /*callback*/) OVERRIDE {
     return ERR_NOT_IMPLEMENTED;
   }
 };
@@ skipping 17 matching lines @@
 
   virtual void CancelRequest(RequestHandle request) OVERRIDE {
     NOTREACHED();
   }
 
   virtual LoadState GetLoadState(RequestHandle request) const OVERRIDE {
     NOTREACHED();
     return LOAD_STATE_IDLE;
   }
 
-  virtual LoadState GetLoadStateThreadSafe(
-      RequestHandle request) const OVERRIDE {
-    NOTREACHED();
-    return LOAD_STATE_IDLE;
-  }
-
   virtual void CancelSetPacScript() OVERRIDE {
     NOTREACHED();
   }
 
   virtual int SetPacScript(
       const scoped_refptr<ProxyResolverScriptData>& pac_script,
       const CompletionCallback& callback) OVERRIDE {
     return OK;
   }
 
@@ skipping 1304 matching lines @@
     OnCompletion(result_);
   }
 }
 
 void SyncProxyServiceHelper::OnCompletion(int rv) {
   result_ = rv;
   event_.Signal();
 }
 
 }  // namespace net