Cronet Java wrappers to fallback to HttpUrlConnection if Cronet is not available.

net/cronet/android/java/src/org/chromium/net/HttpUrlConnectionUrlRequestFactory.java

Index: net/cronet/android/java/src/org/chromium/net/HttpUrlConnectionUrlRequestFactory.java
diff --git a/net/cronet/android/java/src/org/chromium/net/HttpUrlConnectionUrlRequestFactory.java b/net/cronet/android/java/src/org/chromium/net/HttpUrlConnectionUrlRequestFactory.java
new file mode 100644
index 0000000000000000000000000000000000000000..052131db543f9113133398fa04a2a405b0af1b4f
--- /dev/null
+++ b/net/cronet/android/java/src/org/chromium/net/HttpUrlConnectionUrlRequestFactory.java
@@ -0,0 +1,47 @@
+// Copyright 2014 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;
+
+import android.content.Context;
+
+import java.nio.channels.WritableByteChannel;
+import java.util.Map;
+
+/**
+ * Network request using {@link java.net.HttpURLConnection}.
+ */
+class HttpUrlConnectionUrlRequestFactory extends HttpUrlRequestFactory {
+
+    private final Context mContext;
+
+    public HttpUrlConnectionUrlRequestFactory(Context context) {
+        mContext = context.getApplicationContext();
+    }
+
+    @Override
+    protected boolean isEnabled() {
+        return true;
+    }
+
+    @Override
+    protected String getName() {
+        return "HttpUrlConnection";
+    }
+
+    @Override
+    protected HttpUrlRequest createRequest(String url, int requestPriority,
+            Map<String, String> headers, HttpUrlRequestListener listener) {
+        return new HttpUrlConnectionUrlRequest(mContext, url, requestPriority,
+                headers, listener);
+    }
+
+    @Override
+    protected HttpUrlRequest createRequest(String url, int requestPriority,
+            Map<String, String> headers, WritableByteChannel channel,
+            HttpUrlRequestListener listener) {
+        return new HttpUrlConnectionUrlRequest(mContext, url, requestPriority,
+                headers, channel, listener);
+    }
+}