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

android_webview/test/embedded_test_server/java/src/org/chromium/android_webview/test/AwEmbeddedTestServerImpl.java

Index: android_webview/test/embedded_test_server/java/src/org/chromium/android_webview/test/AwEmbeddedTestServerImpl.java
diff --git a/android_webview/test/embedded_test_server/java/src/org/chromium/android_webview/test/AwEmbeddedTestServerImpl.java b/android_webview/test/embedded_test_server/java/src/org/chromium/android_webview/test/AwEmbeddedTestServerImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..4fa67117ba85a0aba7fb767fe1763009564e9983
--- /dev/null
+++ b/android_webview/test/embedded_test_server/java/src/org/chromium/android_webview/test/AwEmbeddedTestServerImpl.java
@@ -0,0 +1,40 @@
+// 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.android_webview.test;
+
+import android.content.Context;
+
+import org.chromium.base.annotations.JNINamespace;
+import org.chromium.net.test.EmbeddedTestServerImpl;
+
+/**
+ * Java bindings for running a net::test_server::EmbeddedTestServer.
+ *
+ * This should not be used directly. Use {@link EmbeddedTestServer} instead.
+ */
+@JNINamespace("android_webview::test")
+public class AwEmbeddedTestServerImpl extends EmbeddedTestServerImpl {
+    /** Create an uninitialized EmbeddedTestServer. */
+    public AwEmbeddedTestServerImpl(Context context) {
+        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) {
+        super.addDefaultHandlers(directoryPath);
+        long[] handlers = nativeGetHandlers();
+        for (long handler : handlers) {
+            super.registerRequestHandler(handler);
+        }
+    }
+
+    private static native long[] nativeGetHandlers();
+}