policy: Remove UserCloudPolicyManagerFactory's dependency on Profile.

chrome/browser/signin/signin_manager_factory.cc

Index: chrome/browser/signin/signin_manager_factory.cc
diff --git a/chrome/browser/signin/signin_manager_factory.cc b/chrome/browser/signin/signin_manager_factory.cc
index 8eb46455b8c9010c943c5f96870db4db4b99be59..811b029450bc9dd8e5b348b683b51fb0cdc3511c 100644
--- a/chrome/browser/signin/signin_manager_factory.cc
+++ b/chrome/browser/signin/signin_manager_factory.cc
@@ -24,10 +24,10 @@ SigninManagerFactory::~SigninManagerFactory() {}
 
 #if defined(OS_CHROMEOS)
 // static
-SigninManagerBase* SigninManagerFactory::GetForProfileIfExists(
-    Profile* profile) {
+SigninManagerBase* SigninManagerFactory::GetForBrowserContextIfExists(
+    content::BrowserContext* context) {
   return static_cast<SigninManagerBase*>(
-      GetInstance()->GetServiceForBrowserContext(profile, false));
+      GetInstance()->GetServiceForBrowserContext(context, false));
 }
 
 // static
@@ -45,9 +45,10 @@ SigninManager* SigninManagerFactory::GetForProfile(Profile* profile) {
 }
 
 // static
-SigninManager* SigninManagerFactory::GetForProfileIfExists(Profile* profile) {
+SigninManager* SigninManagerFactory::GetForBrowserContextIfExists(
+    content::BrowserContext* context) {
   return static_cast<SigninManager*>(
-      GetInstance()->GetServiceForBrowserContext(profile, false));
+      GetInstance()->GetServiceForBrowserContext(context, false));
 }
 #endif