predictors: Refactor the prefetcher in resource_prefetch_predictor.

chrome/browser/predictors/resource_prefetcher_manager.h

 // Copyright 2014 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_PREDICTORS_RESOURCE_PREFETCHER_MANAGER_H_
 #define CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCHER_MANAGER_H_
 
 #include <map>
 
 #include "base/macros.h"
@@ skipping 28 matching lines @@
   void ShutdownOnUIThread();
 
   // --- IO Thread methods.
 
   // The prefetchers need to be deleted on the IO thread.
   void ShutdownOnIOThread();
 
   // Will create a new ResourcePrefetcher for the main frame url of the input
   // navigation if there isn't one already for the same URL or host (for host
   // based).
-  void MaybeAddPrefetch(
-      const NavigationID& navigation_id,
-      PrefetchKeyType key_type,
-      std::unique_ptr<ResourcePrefetcher::RequestVector> requests);
+  void MaybeAddPrefetch(const NavigationID& navigation_id,
+                        PrefetchKeyType key_type,
+                        const std::vector<GURL>& urls);
 
   // Stops the ResourcePrefetcher for the input navigation, if one was in
   // progress.
   void MaybeRemovePrefetch(const NavigationID& navigation_id);
 
   // ResourcePrefetcher::Delegate methods.
-  void ResourcePrefetcherFinished(
-      ResourcePrefetcher* prefetcher,
-      ResourcePrefetcher::RequestVector* requests) override;
+  void ResourcePrefetcherFinished(ResourcePrefetcher* prefetcher) override;
   net::URLRequestContext* GetURLRequestContext() override;
 
  private:
   friend class base::RefCountedThreadSafe<ResourcePrefetcherManager>;
   friend class MockResourcePrefetcherManager;
 
   typedef std::map<std::string, ResourcePrefetcher*> PrefetcherMap;
 
   ~ResourcePrefetcherManager() override;
 
-  // UI Thread. |predictor_| needs to be called on the UI thread.
-  void ResourcePrefetcherFinishedOnUI(
-      const NavigationID& navigation_id,
-      PrefetchKeyType key_type,
-      std::unique_ptr<ResourcePrefetcher::RequestVector> requests);
-
   ResourcePrefetchPredictor* predictor_;
   const ResourcePrefetchPredictorConfig config_;
   net::URLRequestContextGetter* const context_getter_;
 
   PrefetcherMap prefetcher_map_;  // Owns the ResourcePrefetcher pointers.
 
   DISALLOW_COPY_AND_ASSIGN(ResourcePrefetcherManager);
 };
 
 }  // namespace predictors
 
 #endif  // CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCHER_MANAGER_H_