Cronet: a framework for providing alternative Cronet implementations

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

Index: components/cronet/android/java/src/org/chromium/net/impl/JavaCronetEngineBuilder.java
diff --git a/components/cronet/android/java/src/org/chromium/net/impl/JavaCronetEngineBuilder.java b/components/cronet/android/java/src/org/chromium/net/impl/JavaCronetEngineBuilder.java
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index 0000000000000000000000000000000000000000..357c2c5282151e498283f1609e909b058e9afb2c
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+++ b/components/cronet/android/java/src/org/chromium/net/impl/JavaCronetEngineBuilder.java
@@ -0,0 +1,32 @@
+// 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 Java-based Cronet engine.
+ */
+public class JavaCronetEngineBuilder extends CronetEngineBuilderImpl {
+    /**
+     * Builder for Platform Cronet Engine.
+     *
+     * @param context Android {@link Context} for engine to use.
+     */
+    public JavaCronetEngineBuilder(Context context) {
+        super(context);
+    }
+
+    @Override
+    public ExperimentalCronetEngine build() {
+        if (getUserAgent() == null) {
+            setUserAgent(getDefaultUserAgent());
+        }
+        return new JavaCronetEngine(getUserAgent());
+    }
+}