[components] Switch {RefCounted}ProfileKeyedService to use BrowserContext

chrome/browser/extensions/menu_manager_unittest.cc

Index: chrome/browser/extensions/menu_manager_unittest.cc
diff --git a/chrome/browser/extensions/menu_manager_unittest.cc b/chrome/browser/extensions/menu_manager_unittest.cc
index 7e6f8723732fe451ad3c5759fe381f570fc6b9fe..bd60d8cd571f25c43285e7234ce8474b3665fa6f 100644
--- a/chrome/browser/extensions/menu_manager_unittest.cc
+++ b/chrome/browser/extensions/menu_manager_unittest.cc
@@ -489,8 +489,9 @@ class MockExtensionSystem : public TestExtensionSystem {
   DISALLOW_COPY_AND_ASSIGN(MockExtensionSystem);
 };
 
-ProfileKeyedService* BuildMockExtensionSystem(Profile* profile) {
-  return new MockExtensionSystem(profile);
+ProfileKeyedService* BuildMockExtensionSystem(
+    content::BrowserContext* profile) {
+  return new MockExtensionSystem(static_cast<Profile*>(profile));
 }
 
 // Tests the RemoveAll functionality.