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// 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/prerender/prerender_manager_factory.h"
#include "base/sys_info.h"
#include "base/trace_event/trace_event.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/history/history_service_factory.h"
#include "chrome/browser/predictors/predictor_database_factory.h"
#include "chrome/browser/prerender/prerender_manager.h"
#include "chrome/browser/profiles/incognito_helpers.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/sync/profile_sync_service_factory.h"
#include "components/keyed_service/content/browser_context_dependency_manager.h"
#if defined(ENABLE_EXTENSIONS)
#include "extensions/browser/extension_system_provider.h"
#include "extensions/browser/extensions_browser_client.h"
#endif
namespace prerender {
// static
PrerenderManager* PrerenderManagerFactory::GetForProfile(
Profile* profile) {
TRACE_EVENT0("browser", "PrerenderManagerFactory::GetForProfile")
if (!PrerenderManager::IsPrerenderingPossible())
return NULL;
return static_cast<PrerenderManager*>(
GetInstance()->GetServiceForBrowserContext(profile, true));
}
// static
PrerenderManagerFactory* PrerenderManagerFactory::GetInstance() {
return Singleton<PrerenderManagerFactory>::get();
}
PrerenderManagerFactory::PrerenderManagerFactory()
: BrowserContextKeyedServiceFactory(
"PrerenderManager",
BrowserContextDependencyManager::GetInstance()) {
#if defined(ENABLE_EXTENSIONS)
DependsOn(
extensions::ExtensionsBrowserClient::Get()->GetExtensionSystemFactory());
#endif
// PrerenderLocalPredictor observers the history visit DB.
DependsOn(HistoryServiceFactory::GetInstance());
DependsOn(predictors::PredictorDatabaseFactory::GetInstance());
DependsOn(ProfileSyncServiceFactory::GetInstance());
}
PrerenderManagerFactory::~PrerenderManagerFactory() {
}
KeyedService* PrerenderManagerFactory::BuildServiceInstanceFor(
content::BrowserContext* browser_context) const {
Profile* profile = Profile::FromBrowserContext(browser_context);
if (base::SysInfo::IsLowEndDevice())
return NULL;
return new PrerenderManager(profile);
}
content::BrowserContext* PrerenderManagerFactory::GetBrowserContextToUse(
content::BrowserContext* context) const {
return chrome::GetBrowserContextOwnInstanceInIncognito(context);
}
} // namespace prerender
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