[components] Switch {RefCounted}ProfileKeyedService to use BrowserContext

chrome/browser/spellchecker/spellcheck_factory.cc

Index: chrome/browser/spellchecker/spellcheck_factory.cc
diff --git a/chrome/browser/spellchecker/spellcheck_factory.cc b/chrome/browser/spellchecker/spellcheck_factory.cc
index c859897a3485ce3155d217bf090b7f992cb1531f..db224f518257d6e880ac2e887613daaeabbd1d7b 100644
--- a/chrome/browser/spellchecker/spellcheck_factory.cc
+++ b/chrome/browser/spellchecker/spellcheck_factory.cc
@@ -34,7 +34,9 @@ SpellcheckServiceFactory::SpellcheckServiceFactory()
 SpellcheckServiceFactory::~SpellcheckServiceFactory() {}
 
 ProfileKeyedService* SpellcheckServiceFactory::BuildServiceInstanceFor(
-    Profile* profile) const {
+    content::BrowserContext* context) const {
+  Profile* profile = static_cast<Profile*>(context);
+
   // Many variables are initialized from the profile in the SpellcheckService.
   DCHECK(profile);
   SpellcheckService* spellcheck = new SpellcheckService(profile);