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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/browser/predictors/resource_prefetch_predictor_factory.h"
      6 
      7 #include "chrome/browser/history/history_service_factory.h"
      8 #include "chrome/browser/predictors/predictor_database_factory.h"
      9 #include "chrome/browser/predictors/resource_prefetch_common.h"
     10 #include "chrome/browser/predictors/resource_prefetch_predictor.h"
     11 #include "chrome/browser/profiles/profile.h"
     12 #include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
     13 
     14 namespace predictors {
     15 
     16 // static
     17 ResourcePrefetchPredictor* ResourcePrefetchPredictorFactory::GetForProfile(
     18     Profile* profile) {
     19   return static_cast<ResourcePrefetchPredictor*>(
     20       GetInstance()->GetServiceForBrowserContext(profile, true));
     21 }
     22 
     23 // static
     24 ResourcePrefetchPredictorFactory*
     25 ResourcePrefetchPredictorFactory::GetInstance() {
     26   return Singleton<ResourcePrefetchPredictorFactory>::get();
     27 }
     28 
     29 ResourcePrefetchPredictorFactory::ResourcePrefetchPredictorFactory()
     30     : BrowserContextKeyedServiceFactory(
     31         "ResourcePrefetchPredictor",
     32         BrowserContextDependencyManager::GetInstance()) {
     33   DependsOn(HistoryServiceFactory::GetInstance());
     34   DependsOn(PredictorDatabaseFactory::GetInstance());
     35 }
     36 
     37 ResourcePrefetchPredictorFactory::~ResourcePrefetchPredictorFactory() {}
     38 
     39 BrowserContextKeyedService*
     40     ResourcePrefetchPredictorFactory::BuildServiceInstanceFor(
     41         content::BrowserContext* context) const {
     42   Profile* profile = static_cast<Profile*>(context);
     43 
     44   ResourcePrefetchPredictorConfig config;
     45   if (!IsSpeculativeResourcePrefetchingEnabled(profile, &config))
     46     return NULL;
     47 
     48   return new ResourcePrefetchPredictor(config, profile);
     49 }
     50 
     51 }  // namespace predictors
     52