[Cleanup] Const-correct the profile() method for the EasyUnlockService

chrome/browser/signin/signin_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/signin/signin_manager_factory.h"
 
 #include "base/prefs/pref_registry_simple.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/account_tracker_service_factory.h"
@@ skipping 18 matching lines @@
 }
 
 #if defined(OS_CHROMEOS)
 // static
 SigninManagerBase* SigninManagerFactory::GetForProfileIfExists(
     Profile* profile) {
   return static_cast<SigninManagerBase*>(
       GetInstance()->GetServiceForBrowserContext(profile, false));
 }
 
+const SigninManagerBase* SigninManagerFactory::GetForProfileIfExists(
+    const Profile* profile) {
+  return static_cast<const SigninManagerBase*>(
+      GetInstance()->GetServiceForBrowserContext(
+          const_cast<Profile*>(profile), false));
+}
+
 // static
 SigninManagerBase* SigninManagerFactory::GetForProfile(
     Profile* profile) {
   return static_cast<SigninManagerBase*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 #else
 // static
 SigninManager* SigninManagerFactory::GetForProfile(Profile* profile) {
   return static_cast<SigninManager*>(
       GetInstance()->GetServiceForBrowserContext(profile, true));
 }
 
 // static
 SigninManager* SigninManagerFactory::GetForProfileIfExists(Profile* profile) {
   return static_cast<SigninManager*>(
       GetInstance()->GetServiceForBrowserContext(profile, false));
 }
+
+// static
+const SigninManager* SigninManagerFactory::GetForProfileIfExists(
+    const Profile* profile) {
+  return static_cast<const SigninManager*>(
+      GetInstance()->GetServiceForBrowserContext(
+          const_cast<Profile*>(profile), false));
+}
 #endif
 
 // static
 SigninManagerFactory* SigninManagerFactory::GetInstance() {
   return Singleton<SigninManagerFactory>::get();
 }
 
 void SigninManagerFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterStringPref(
@@ skipping 77 matching lines @@
 }
 
 void SigninManagerFactory::BrowserContextShutdown(
     content::BrowserContext* context) {
   SigninManagerBase* manager = static_cast<SigninManagerBase*>(
       GetServiceForBrowserContext(context, false));
   if (manager)
     FOR_EACH_OBSERVER(Observer, observer_list_, SigninManagerShutdown(manager));
   BrowserContextKeyedServiceFactory::BrowserContextShutdown(context);
 }