Seculative resource prefetching for URLs CL.

chrome/browser/net/resource_prefetch_predictor_observer.h

+// 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.
+
+#ifndef CHROME_BROWSER_NET_RESOURCE_PREFETCH_PREDICTOR_OBSERVER_H_
+#define CHROME_BROWSER_NET_RESOURCE_PREFETCH_PREDICTOR_OBSERVER_H_
+#pragma once
+
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/predictors/resource_prefetch_predictor.h"
+
+namespace net {
+class URLRequest;
+}
+
+namespace chrome_browser_net {
+
+class ResourcePrefetchPredictorObserver  {
+ public:
+  explicit ResourcePrefetchPredictorObserver(
+      scoped_refptr<predictors::ResourcePrefetchPredictor> predictor);
+  ~ResourcePrefetchPredictorObserver();
+
+  // Parts of the NetworkDelegate that we want to observe.
+  void OnBeforeURLRequest(net::URLRequest* request);
+  void OnBeforeRedirect(net::URLRequest* request);
+  void OnResponseStarted(net::URLRequest* request);
+
+ private:
+  void CallPredictorOnUIThread(
+      net::URLRequest* request,
+      bool is_response,
+      void(predictors::ResourcePrefetchPredictor::*recordFunction)
+      (const predictors::ResourcePrefetchPredictor::URLRequestSummary&)) const;
+
+  scoped_refptr<predictors::ResourcePrefetchPredictor> predictor_;
+
+  DISALLOW_COPY_AND_ASSIGN(ResourcePrefetchPredictorObserver);
+};
+
+}  // namespace chrome_browser_net
+
+#endif  // CHROME_BROWSER_NET_RESOURCE_PREFETCH_PREDICTOR_OBSERVER_H_