[Cronet] Initial implementation of HttpURLConnection

components/cronet/android/java/src/org/chromium/net/urlconnection/CronetHttpURLStreamHandler.java

+// 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.urlconnection;
+
+import org.chromium.net.UrlRequestContext;
+
+import java.io.IOException;
+import java.net.Proxy;
+import java.net.URL;
+import java.net.URLConnection;
+import java.net.URLStreamHandler;
+
+/**
+ * An {@code URLStreamHandler} that handles http and https connections.
+ */
+public class CronetHttpURLStreamHandler extends URLStreamHandler {
+    private final UrlRequestContext mUrlRequestContext;
+
+    public CronetHttpURLStreamHandler(UrlRequestContext urlRequestContext) {
+        mUrlRequestContext = urlRequestContext;
+    }
+
+    /**
+     * Establishes a new connection to the resource specified by the URL url.
+     */
+    @Override
+    protected URLConnection openConnection(URL url) throws IOException {
+        String protocol = url.getProtocol();
+        if ("http".equals(protocol) || "https".equals(protocol)) {
+            return new CronetHttpURLConnection(url, mUrlRequestContext);
+        }
+        throw new UnsupportedOperationException(
+                "Unexpected protocol:" + protocol);
+    }
+
+    /**
+     * Establishes a new connection to the resource specified by the URL url
+     * using the given proxy.
+     */
+    @Override
+    protected URLConnection openConnection(URL url, Proxy proxy) {
+        throw new UnsupportedOperationException();
+    }
+}