Read NQE prefs to network quality store under all cases

net/nqe/network_quality_estimator_params.cc

Index: net/nqe/network_quality_estimator_params.cc
diff --git a/net/nqe/network_quality_estimator_params.cc b/net/nqe/network_quality_estimator_params.cc
index 10294264117f2344ccf54fc385e4a3fe97f3f995..8a76bdde4eeb3bc34193b168d76d2aba5b146368 100644
--- a/net/nqe/network_quality_estimator_params.cc
+++ b/net/nqe/network_quality_estimator_params.cc
@@ -369,6 +369,16 @@ EffectiveConnectionType forced_effective_connection_type(
   return forced_effective_connection_type;
 }
 
+bool persistent_cache_reading_enabled(
+    const std::map<std::string, std::string>& variation_params) {
+  if (GetStringValueForVariationParamWithDefaultValue(
+          variation_params, "persistent_cache_reading_enabled", "false") !=
+      "true") {
+    return false;
+  }
+  return true;
+}
+
 }  // namespace internal
 
 }  // namespace nqe