Cleanup many APIs to use ProfileKeyedAPI.

chrome/browser/extensions/api/networking_private/networking_private_event_router_factory.cc

Index: chrome/browser/extensions/api/networking_private/networking_private_event_router_factory.cc
diff --git a/chrome/browser/extensions/api/networking_private/networking_private_event_router_factory.cc b/chrome/browser/extensions/api/networking_private/networking_private_event_router_factory.cc
index f22ff9956d23d41ceedbcb245b3cbc5b4746c2f7..cc9d8121c82f183e83772e93ae83af7079a20b06 100644
--- a/chrome/browser/extensions/api/networking_private/networking_private_event_router_factory.cc
+++ b/chrome/browser/extensions/api/networking_private/networking_private_event_router_factory.cc
@@ -6,18 +6,19 @@
 
 #include "chrome/browser/extensions/api/networking_private/networking_private_event_router.h"
 #include "chrome/browser/extensions/api/networking_private/networking_private_service_client_factory.h"
-#include "chrome/browser/extensions/extension_system_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
+#include "extensions/browser/extension_system_provider.h"
 #include "extensions/browser/extensions_browser_client.h"
 
 namespace extensions {
 
 // static
 NetworkingPrivateEventRouter*
-NetworkingPrivateEventRouterFactory::GetForProfile(Profile* profile) {
+NetworkingPrivateEventRouterFactory::GetForProfile(
+    content::BrowserContext* context) {
   return static_cast<NetworkingPrivateEventRouter*>(
-      GetInstance()->GetServiceForBrowserContext(profile, true));
+      GetInstance()->GetServiceForBrowserContext(context, true));
 }
 
 // static
@@ -30,9 +31,9 @@ NetworkingPrivateEventRouterFactory::NetworkingPrivateEventRouterFactory()
     : BrowserContextKeyedServiceFactory(
           "NetworkingPrivateEventRouter",
           BrowserContextDependencyManager::GetInstance()) {
-  DependsOn(extensions::ExtensionSystemFactory::GetInstance());
+  DependsOn(ExtensionsBrowserClient::Get()->GetExtensionSystemFactory());
 #if !defined(OS_CHROMEOS)
-  DependsOn(extensions::NetworkingPrivateServiceClientFactory::GetInstance());
+  DependsOn(NetworkingPrivateServiceClientFactory::GetInstance());
 #endif
 }
 
@@ -41,8 +42,9 @@ NetworkingPrivateEventRouterFactory::~NetworkingPrivateEventRouterFactory() {
 
 BrowserContextKeyedService*
 NetworkingPrivateEventRouterFactory::BuildServiceInstanceFor(
-    content::BrowserContext* profile) const {
-  return NetworkingPrivateEventRouter::Create(static_cast<Profile*>(profile));
+    content::BrowserContext* context) const {
+  return NetworkingPrivateEventRouter::Create(
+      Profile::FromBrowserContext(context));
 }
 
 content::BrowserContext*