First pass at fixing guest browser cookies issue.

chrome/browser/autocomplete/shortcuts_backend_factory.cc

Index: chrome/browser/autocomplete/shortcuts_backend_factory.cc
diff --git a/chrome/browser/autocomplete/shortcuts_backend_factory.cc b/chrome/browser/autocomplete/shortcuts_backend_factory.cc
index 3b8bdfabae2b7773173d26b6927519669b953bb3..b38331604a5298b6aacb86b953a43a5809058a14 100644
--- a/chrome/browser/autocomplete/shortcuts_backend_factory.cc
+++ b/chrome/browser/autocomplete/shortcuts_backend_factory.cc
@@ -62,9 +62,10 @@ ShortcutsBackendFactory::~ShortcutsBackendFactory() {}
 
 scoped_refptr<RefcountedKeyedService>
 ShortcutsBackendFactory::BuildServiceInstanceFor(
-    content::BrowserContext* profile) const {
+    content::BrowserContext* context) const {
+  Profile* profile = static_cast<Profile*>(context);
   scoped_refptr<ShortcutsBackend> backend(
-      new ShortcutsBackend(static_cast<Profile*>(profile), false));
+      new ShortcutsBackend(profile, profile->IsGuestSession()));
   if (backend->Init())
     return backend;
   return NULL;