Update "Predict network actions" UI setting.

base/prefs/pref_service.cc

Index: base/prefs/pref_service.cc
diff --git a/base/prefs/pref_service.cc b/base/prefs/pref_service.cc
index 65605c5f8e6d346f1d10f82b3a1dc76b08e989a9..9858f2601cc36e6db8f3fc04b42d15d823c175c9 100644
--- a/base/prefs/pref_service.cc
+++ b/base/prefs/pref_service.cc
@@ -486,6 +486,20 @@ const base::Value* PrefService::Preference::GetValue() const {
   return result;
 }
 
+const base::Value* PrefService::Preference::GetUserValue() const {
+  DCHECK(pref_service_->FindPreference(name_.c_str()))
+      << "Must register pref before getting its value";
+
+  const base::Value* found_value = NULL;
+  if (pref_value_store()->GetUserValue(name_, type_, &found_value)) {
+    DCHECK(found_value->IsType(type_));
+    return found_value;
+  }
+
+  // The pref has no user set value.
+  return NULL;
+}
+
 const base::Value* PrefService::Preference::GetRecommendedValue() const {
   DCHECK(pref_service_->FindPreference(name_.c_str())) <<
       "Must register pref before getting its value";