Enable NQE when Cronet Engine is built

components/cronet/url_request_context_config.h

Index: components/cronet/url_request_context_config.h
diff --git a/components/cronet/url_request_context_config.h b/components/cronet/url_request_context_config.h
index 620bb926bdc8c39a0e5c158fc9df4aa38b8aed7f..f464dbbc5cfbbee6acc4b0171568aa1240d4fcd2 100644
--- a/components/cronet/url_request_context_config.h
+++ b/components/cronet/url_request_context_config.h
@@ -107,7 +107,9 @@ struct URLRequestContextConfig {
       // Data reduction proxy secure proxy check URL.
       const std::string& data_reduction_secure_proxy_check_url,
       // MockCertVerifier to use for testing purposes.
-      std::unique_ptr<net::CertVerifier> mock_cert_verifier);
+      std::unique_ptr<net::CertVerifier> mock_cert_verifier,
+      // Enable network quality estimator.
+      bool enable_network_quality_estimator);
   ~URLRequestContextConfig();
 
   // Configure |context_builder| based on |this|.
@@ -151,6 +153,9 @@ struct URLRequestContextConfig {
   // Certificate verifier for testing.
   std::unique_ptr<net::CertVerifier> mock_cert_verifier;
 
+  // Enable network quality estimator.
+  const bool enable_network_quality_estimator;
+
   // App-provided list of servers that support QUIC.
   ScopedVector<QuicHint> quic_hints;