Cronet: a framework to provide alternative Cronet implementations

components/cronet/android/java/src/org/chromium/net/impl/NativeCronetEngineBuilderImpl.java

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.net.impl;
+
+import android.content.Context;
+
+import org.chromium.net.ExperimentalCronetEngine;
+import org.chromium.net.ICronetEngineBuilder;
+
+/**
+ * Implementation of {@link ICronetEngineBuilder} that builds native Cronet engine.
+ */
+public class NativeCronetEngineBuilderImpl extends CronetEngineBuilderImpl {
+    /**
+     * Builder for Native Cronet Engine.
+     * Default config enables SPDY, disables QUIC, SDCH and HTTP cache.
+     *
+     * @param context Android {@link Context} for engine to use.
+     */
+    public NativeCronetEngineBuilderImpl(Context context) {
+        super(context);
+    }
+
+    @Override
+    public ExperimentalCronetEngine build() {
+        if (getUserAgent() == null) {
+            setUserAgent(getDefaultUserAgent());
+        }
+
+        ExperimentalCronetEngine builder = new CronetUrlRequestContext(this);
+
+        // Clear MOCK_CERT_VERIFIER reference if there is any, since
+        // the ownership has been transferred to the engine.
+        mMockCertVerifier = 0;
+
+        return builder;
+    }
+}