[Android Webview] Refactor LoadUrlTest and work on embedded_test_server custom handler

android_webview/embeddedtestserver/java/src/org/chromium/net/test/AwEmbeddedTestServerImpl.java

+// Copyright 2017 The Chromium Authors. All rights reserved.

[jbudorick, 2017/03/09 02:00:47]

nit: This shouldn't be android_webview/embeddedtestserver/...; maybe
android_webview/test/embedded_test_server/ ?

[shenghuazhang, 2017/03/13 18:48:15]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.net.test;
+
+import android.content.Context;
+
+import java.util.concurrent.Callable;
+
+/**
+ * Java bindings for running a net::test_server::EmbeddedTestServer.
+ *
+ * This should not be used directly. Use {@link EmbeddedTestServer} instead.
+ */
+public class AwEmbeddedTestServerImpl extends EmbeddedTestServerImpl {
+    /** Create an uninitialized EmbeddedTestServer. */
+    public AwEmbeddedTestServerImpl(Context context) {

[jbudorick, 2017/03/09 02:00:47]

I think this can be omitted.

[shenghuazhang, 2017/03/13 18:48:15]

Hmm...Actually it would reveal constructor error without this.
http://stackoverflow.com/a/9370709

+        super(context);
+    }
+    /** Add the default handlers and serve files from the provided directory relative to the
+     *  external storage directory.
+     *
+     *  @param directoryPath The path of the directory from which files should be served, relative
+     *      to the external storage directory.
+     */
+    @Override
+    public void addDefaultHandlers(final String directoryPath) {
+        runOnHandlerThread(new Callable<Void>() {
+            @Override
+            public Void call() {
+                nativeAddDefaultHandlers(mNativeEmbeddedTestServer, directoryPath);
+                CustomHandlers custom_handlers = new CustomHandlers();
+                long[] handlers = custom_handlers.getHandlers();
+                for (long h : handlers) {
+                    nativeRegisterRequestHandler(mNativeEmbeddedTestServer, h);
+                }
+                return null;
+            }
+        });
+    }
+}