Move ownership of AppSorting from ExtensionPrefs to ExtensionSystem

extensions/browser/test_extensions_browser_client.cc

Index: extensions/browser/test_extensions_browser_client.cc
diff --git a/extensions/browser/test_extensions_browser_client.cc b/extensions/browser/test_extensions_browser_client.cc
index 30fd83d87c671a7589eceef33c0a0877ab6a68cb..be9e4b5c30e99da966f3e29ba93d99e5f3d42be5 100644
--- a/extensions/browser/test_extensions_browser_client.cc
+++ b/extensions/browser/test_extensions_browser_client.cc
@@ -4,8 +4,8 @@
 
 #include "extensions/browser/test_extensions_browser_client.h"
 
+#include "base/values.h"
 #include "content/public/browser/browser_context.h"
-#include "extensions/browser/app_sorting.h"
 #include "extensions/browser/extension_host_delegate.h"
 #include "extensions/browser/test_runtime_api_delegate.h"
 #include "extensions/browser/updater/null_extension_cache.h"
@@ -140,11 +140,6 @@ bool TestExtensionsBrowserClient::DidVersionUpdate(BrowserContext* context) {
 void TestExtensionsBrowserClient::PermitExternalProtocolHandler() {
 }
 
-scoped_ptr<AppSorting> TestExtensionsBrowserClient::CreateAppSorting(
-    content::BrowserContext* context) {
-  return scoped_ptr<AppSorting>();
-}
-
 bool TestExtensionsBrowserClient::IsRunningInForcedAppMode() { return false; }
 
 ApiActivityMonitor* TestExtensionsBrowserClient::GetApiActivityMonitor(