aw: Add allow wait for form database

android_webview/javatests/src/org/chromium/android_webview/test/AwFormDatabaseTest.java

Index: android_webview/javatests/src/org/chromium/android_webview/test/AwFormDatabaseTest.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AwFormDatabaseTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/AwFormDatabaseTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..6a86f2fb14d25cb240c7caa0a2b4e3f2791cc495
--- /dev/null
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AwFormDatabaseTest.java
@@ -0,0 +1,23 @@
+// 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.support.test.filters.SmallTest;
+
+import org.chromium.android_webview.AwFormDatabase;
+
+/** AwFormDatabaseTest. */
+public class AwFormDatabaseTest extends AwTestBase {
+    @SmallTest
+    public void testSmoke() throws Throwable {
+        runTestOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                AwFormDatabase.clearFormData();
+                assertFalse(AwFormDatabase.hasFormData());
+            }
+        });
+    }
+}