Add functionality for embedders to configure NQE

components/cronet/android/cronet_url_request_context_adapter.h

Index: components/cronet/android/cronet_url_request_context_adapter.h
diff --git a/components/cronet/android/cronet_url_request_context_adapter.h b/components/cronet/android/cronet_url_request_context_adapter.h
index c02bad0d7c6331000f9677f8ecc789ecfd293f36..775c842747fe6913a589fb3104a69d4d0aa5d1be 100644
--- a/components/cronet/android/cronet_url_request_context_adapter.h
+++ b/components/cronet/android/cronet_url_request_context_adapter.h
@@ -212,6 +212,10 @@ class CronetURLRequestContextAdapter
 
   std::unique_ptr<base::DictionaryValue> GetNetLogInfo() const;
 
+  // Initializes Network Quality Estimator (NQE) prefs manager on network
+  // thread.
+  void InitializeNQEPrefsOnNetworkThread() const;
+
   // Network thread is owned by |this|, but is destroyed from java thread.
   base::Thread* network_thread_;