The optional Malware Details also collects HTTP cache information. See design...

chrome/browser/safe_browsing/malware_details_cache.h

+// Copyright (c) 2011 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_SAFE_BROWSING_MALWARE_DETAILS_CACHE_H_
+#define CHROME_BROWSER_SAFE_BROWSING_MALWARE_DETAILS_CACHE_H_
+#pragma once
+
+// A class that gets malware details from the HTTP Cache.
+// An instance of this class is generated by MalwareDetails.
+
+#include <string>
+#include <vector>
+
+#include "base/hash_tables.h"
+#include "base/memory/linked_ptr.h"
+#include "base/memory/ref_counted.h"
+#include "chrome/browser/safe_browsing/report.pb.h"
+#include "chrome/common/net/url_fetcher.h"
+#include "net/base/completion_callback.h"
+
+namespace net {
+class URLRequestContext;
+}
+
+class MalwareDetailsFactory;
+
+namespace safe_browsing {
+
+// Maps a URL to its Resource.
+typedef base::hash_map<
+  std::string,
+  linked_ptr<safe_browsing::ClientMalwareReportRequest::Resource> > ResourceMap;
+}
+
+class MalwareDetailsCacheCollector
+    : public base::RefCountedThreadSafe<MalwareDetailsCacheCollector>,
+      public URLFetcher::Delegate {
+
+ public:
+  MalwareDetailsCacheCollector();
+
+  // friend class base::RefCountedThreadSafe<MalwareDetailsCacheCollector>;
+  virtual ~MalwareDetailsCacheCollector();
+
+  // We use |request_context_getter|, we modify |resources| and
+  // |result|, and we call |callback|, so they must all remain alive
+  // for the lifetime of this object.
+  void StartCacheCollection(
+      net::URLRequestContextGetter* request_context_getter,
+      safe_browsing::ResourceMap* resources,
+      bool* result,
+      Task* callback);
+
+  // Returns whether or not StartCacheCollection has been called.
+  bool HasStarted();
+
+  // Creates a new URLFetcher and starts it. Public because we create
+  // a task to it, but not to be used by other classes.
+  // tODO: needs to be public?

[mattm, 2011/04/18 02:19:24]

shouldn't need to be public

[panayiotis, 2011/04/18 17:26:40]

Done.

+  void OpenEntry();
+
+ protected:
+  // Implementation of URLFetcher::Delegate. Called after the request
+  // completes (either successfully or with failure).
+  virtual void OnURLFetchComplete(const URLFetcher* source,
+                                  const GURL& url,
+                                  const net::URLRequestStatus& status,
+                                  int response_code,
+                                  const ResponseCookies& cookies,
+                                  const std::string& data);
+
+ private:
+  // Points to the url for which we are fetching the HTTP cache entry or
+  // redirect chain.
+  safe_browsing::ResourceMap::iterator resources_it_;
+
+  // Points to the resources_ map in the MalwareDetails.
+  safe_browsing::ResourceMap* resources_;
+
+  // Points to the cache_result_ in the MalwareDetails.
+  bool* result_;
+
+  // Method we call when we are done. The caller must be alive for the
+  // whole time, we are modifying its state (see above).
+  Task* callback_;
+
+  // Set to true as soon as StartCacheCollection is called.
+  bool has_started_;
+
+  // Used to get a pointer to the HTTP cache.
+  net::URLRequestContextGetter* request_context_getter_;
+
+  // The current URLFetcher.
+  scoped_ptr<URLFetcher> current_fetch_;
+
+  // Returns the resource from resources_ that corresponds to |url|
+  safe_browsing::ClientMalwareReportRequest::Resource* GetResource(
+      const GURL& url);
+
+  // Read the HTTP response from |source| and add it to |pb_resource|.
+  void ReadResponse(
+      safe_browsing::ClientMalwareReportRequest::Resource* pb_resource,
+      const URLFetcher* source);
+
+  // Read the body |data| and add it to |pb_resource|.
+  void ReadData(
+      safe_browsing::ClientMalwareReportRequest::Resource* pb_resource,
+      const std::string& data);
+
+  // Called when we are done.
+  void AllDone(bool success);
+
+  // Advances to the next entry in resources_it_.
+  void AdvanceEntry();
+};
+
+#endif  // CHROME_BROWSER_SAFE_BROWSING_MALWARE_DETAILS_CACHE_H_