Delete Cronet Data Reduction Proxy integration

components/cronet/stale_host_resolver_unittest.cc

Index: components/cronet/stale_host_resolver_unittest.cc
diff --git a/components/cronet/stale_host_resolver_unittest.cc b/components/cronet/stale_host_resolver_unittest.cc
index 9e6e6554af3d64b3cc5ded2a2469e5e13bfa1d37..0bff86e82c945bad4cd13014e3e4cec331ad8779 100644
--- a/components/cronet/stale_host_resolver_unittest.cc
+++ b/components/cronet/stale_host_resolver_unittest.cc
@@ -470,14 +470,6 @@ TEST_F(StaleHostResolverTest, CreatedByContext) {
       "\"delay_ms\":0,"
       "\"max_expired_time_ms\":0,"
       "\"max_stale_uses\":0}}",
-      // Data reduction proxy key.
-      "",
-      // Data reduction proxy.
-      "",
-      // Fallback data reduction proxy.
-      "",
-      // Data reduction proxy secure proxy check URL.
-      "",
       // MockCertVerifier to use for testing purposes.
       std::unique_ptr<net::CertVerifier>(),
       // Enable network quality estimator.