Add optional creation to ProfileKeyedServiceFactory.

chrome/browser/profiles/profile_keyed_service_factory.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_PROFILES_PROFILE_KEYED_SERVICE_FACTORY_H_
 #define CHROME_BROWSER_PROFILES_PROFILE_KEYED_SERVICE_FACTORY_H_
 
 #include <map>
 
 class Profile;
@@ skipping 35 matching lines @@
   //
   //   MyServiceFactory::MyServiceFactory()
   //     : ProfileKeyedServiceFactory(
   //         ProfileDependencyManager::GetInstance())
   //   {}
   explicit ProfileKeyedServiceFactory(ProfileDependencyManager* manager);
   virtual ~ProfileKeyedServiceFactory();
 
   // Common implementation that maps |profile| to some service object. Deals
   // with incognito profiles per subclass instructions with
-  // ServiceActiveInIncognito().
-  ProfileKeyedService* GetServiceForProfile(Profile* profile);
+  // ServiceActiveInIncognito(). If |create| is true, the service will be
+  // created using BuildServiceInstanceFor() if it doesn't already exist.
+  ProfileKeyedService* GetServiceForProfile(Profile* profile, bool create);
 
   // The main public interface for declaring dependencies between services
   // created by factories.
   void DependsOn(ProfileKeyedServiceFactory* rhs);
 
   // Maps |profile| to |provider| with debug checks to prevent duplication.
   void Associate(Profile* profile, ProfileKeyedService* service);
 
   // Returns a new instance of the service, casted to void* for our common
   // storage.
@@ skipping 31 matching lines @@
   // Which ProfileDependencyManager we should communicate with. In real code,
   // this will always be ProfileDependencyManager::GetInstance(), but unit
   // tests will want to use their own copy.
   ProfileDependencyManager* dependency_manager_;
 
   // A mock factory function to use to create the service, used by tests.
   FactoryFunction factory_;
 };
 
 #endif  // CHROME_BROWSER_PROFILES_PROFILE_KEYED_SERVICE_FACTORY_H_