Add a test runner for android_webview.

android_webview/java/src/org/chromium/android_webview/AndroidWebViewUtil.java

+// 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.
+
+package org.chromium.android_webview;
+
+/**
+ * This class provides a way to create the native WebContents.
+ */
+public abstract class AndroidWebViewUtil {
+    // TODO(mkosiba): rename to ContentViewUtil when we stop linking against chrome/ (or share the
+    // chrome/ ContentViewUtil).
+    private AndroidWebViewUtil() {
+    }
+
+    /**
+     * @return pointer to native WebContents instance, suitable for using with a
+     *         (java) ContentViewCore instance.
+     */
+    public static int createNativeWebContents(boolean incognito) {
+        return nativeCreateNativeWebContents(incognito);
+    }
+
+    private static native int nativeCreateNativeWebContents(boolean incognito);
+}