chrome/browser/predictors/resource_prefetch_predictor_factory.cc

   1 // Copyright 2014 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/keyed_service/content/browser_context_dependency_manager.h"
  13 #include "components/keyed_service/content/browser_context_keyed_service_factory.h"
  14
  15 namespace predictors {
  16
  17 // static
  18 ResourcePrefetchPredictor* ResourcePrefetchPredictorFactory::GetForProfile(
  19     content::BrowserContext* context) {
  20   return static_cast<ResourcePrefetchPredictor*>(
  21       GetInstance()->GetServiceForBrowserContext(context, true));
  22 }
  23
  24 // static
  25 ResourcePrefetchPredictorFactory*
  26 ResourcePrefetchPredictorFactory::GetInstance() {
  27   return Singleton<ResourcePrefetchPredictorFactory>::get();
  28 }
  29
  30 ResourcePrefetchPredictorFactory::ResourcePrefetchPredictorFactory()
  31     : BrowserContextKeyedServiceFactory(
  32         "ResourcePrefetchPredictor",
  33         BrowserContextDependencyManager::GetInstance()) {
  34   DependsOn(HistoryServiceFactory::GetInstance());
  35   DependsOn(PredictorDatabaseFactory::GetInstance());
  36 }
  37
  38 ResourcePrefetchPredictorFactory::~ResourcePrefetchPredictorFactory() {}
  39
  40 KeyedService*
  41     ResourcePrefetchPredictorFactory::BuildServiceInstanceFor(
  42         content::BrowserContext* context) const {
  43   Profile* profile = Profile::FromBrowserContext(context);
  44
  45   ResourcePrefetchPredictorConfig config;
  46   if (!IsSpeculativeResourcePrefetchingEnabled(profile, &config))
  47     return NULL;
  48
  49   return new ResourcePrefetchPredictor(config, profile);
  50 }
  51
  52 }  // namespace predictors