[components] Switch {RefCounted}ProfileKeyedService to use BrowserContext

chrome/browser/extensions/install_tracker_factory.cc

Index: chrome/browser/extensions/install_tracker_factory.cc
diff --git a/chrome/browser/extensions/install_tracker_factory.cc b/chrome/browser/extensions/install_tracker_factory.cc
index c85a222297dc110d9a09640852c99dc99b549414..820404aac3fe89966c3d277dd7bcb12d4f1a3785 100644
--- a/chrome/browser/extensions/install_tracker_factory.cc
+++ b/chrome/browser/extensions/install_tracker_factory.cc
@@ -9,6 +9,7 @@
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/extensions/install_tracker.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_dependency_manager.h"
 
 namespace extensions {
@@ -33,7 +34,8 @@ InstallTrackerFactory::~InstallTrackerFactory() {
 }
 
 ProfileKeyedService* InstallTrackerFactory::BuildServiceInstanceFor(
-    Profile* profile) const {
+    content::BrowserContext* context) const {
+  Profile* profile = static_cast<Profile*>(context);
   ExtensionService* service =
       extensions::ExtensionSystem::Get(profile)->extension_service();
   return new InstallTracker(profile, service->extension_prefs());