ifdef more extensions code to be used only when extensions are enabled.

chrome/browser/prerender/prerender_manager_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/prerender/prerender_manager_factory.h"
 
 #include "base/debug/trace_event.h"
 #include "base/sys_info.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"
-#include "extensions/browser/extension_system_provider.h"
-#include "extensions/browser/extensions_browser_client.h"
+
+#if defined(OS_ANDROID)
+#include "chrome/browser/android/prerender_condition_platform.h"
+#endif
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/prerender_condition_network.h"
 #include "chromeos/network/network_handler.h"
 #endif
 
-#if defined(OS_ANDROID)
-#include "chrome/browser/android/prerender_condition_platform.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(
@@ skipping 15 matching lines @@
 #endif
   return prerender_manager;
 }
 
 content::BrowserContext* PrerenderManagerFactory::GetBrowserContextToUse(
     content::BrowserContext* context) const {
   return chrome::GetBrowserContextOwnInstanceInIncognito(context);
 }
 
 }  // namespace prerender