Add a test runner for android_webview.

android_webview/native/android_web_view_util.cc

Index: android_webview/native/android_web_view_util.cc
diff --git a/android_webview/native/android_web_view_util.cc b/android_webview/native/android_web_view_util.cc
new file mode 100644
index 0000000000000000000000000000000000000000..3b8c830334eade6fbd33032dcce97c59c439073e
--- /dev/null
+++ b/android_webview/native/android_web_view_util.cc
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 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.
+
+#include "android_webview/native/android_web_view_util.h"
+
+#include "android_webview/native/aw_browser_dependency_factory.h"
+#include "base/android/jni_android.h"
+#include "jni/AndroidWebViewUtil_jni.h"
+
+static jint CreateNativeWebContents(
+    JNIEnv* env, jclass clazz, jboolean incognito) {
+  android_webview::AwBrowserDependencyFactory* browser_deps =
+      android_webview::AwBrowserDependencyFactory::GetInstance();
+  return reinterpret_cast<jint>(browser_deps->CreateWebContents(incognito));
+}
+
+bool RegisterAndroidWebViewUtil(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}