Seculative resource prefetching for URLs CL.

chrome/browser/predictors/resource_prefetch_predictor_factory.cc

+// 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.
+
+#include "chrome/browser/predictors/resource_prefetch_predictor_factory.h"
+
+#include "chrome/browser/predictors/predictor_database_factory.h"
+#include "chrome/browser/predictors/resource_prefetch_predictor.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/profiles/profile_dependency_manager.h"
+
+namespace predictors {
+
+// static
+scoped_refptr<ResourcePrefetchPredictor>
+    ResourcePrefetchPredictorFactory::GetForProfile(Profile* profile) {
+  return static_cast<ResourcePrefetchPredictor*>(
+      GetInstance()->GetServiceForProfile(profile, true).get());
+}
+
+// static
+ResourcePrefetchPredictorFactory*
+ResourcePrefetchPredictorFactory::GetInstance() {
+  return Singleton<ResourcePrefetchPredictorFactory>::get();
+}
+
+ResourcePrefetchPredictorFactory::ResourcePrefetchPredictorFactory()
+    : RefcountedProfileKeyedServiceFactory(
+        "ResourcePrefetchPredictor", ProfileDependencyManager::GetInstance()) {
+  // TODO(shishir): Uncomment this when crbug.com/97804 is fixed.
+  // DependsOn(HistoryServiceFactory::GetInstance());
+  DependsOn(PredictorDatabaseFactory::GetInstance());
+}
+
+ResourcePrefetchPredictorFactory::~ResourcePrefetchPredictorFactory() {}
+
+scoped_refptr<RefcountedProfileKeyedService>
+    ResourcePrefetchPredictorFactory::BuildServiceInstanceFor(
+        Profile* profile) const {
+  return ResourcePrefetchPredictor::IsEnabled() ?
+      scoped_refptr<RefcountedProfileKeyedService>(
+          new ResourcePrefetchPredictor(profile)) : NULL;
+}
+
+}  // namespace predictors