Adds ContentShellTest.apk and very simple test.

content/shell/android/javatests/src/org/chromium/content_shell/ContentShellUrlTest.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.content_shell;
+
+import android.app.Activity;
+import android.test.ActivityInstrumentationTestCase2;
+
+/**
+ * Example test that just starts the content shell.
+ * <p>
+ * TODO(klundberg) Expand this test to provide more useful tests.
+ */
+public class ContentShellUrlTest extends ContentShellTestBase<ContentShellActivity> {
+    // URL used for base tests.
+    private static final String URL = "data:text";
+
+    public ContentShellUrlTest() {
+        super(org.chromium.content_shell.ContentShellActivity.class);
+    }
+
+    public void testBaseStartup() throws Exception {
+        Activity activity = launchContentShellWithUrl(URL);
+
+        // Make sure the activity was created as expected.
+        assertNotNull(activity);
+        assertTrue(activity instanceof ContentShellActivity);

[Ted C, 2012/07/11 22:28:28]

If you change launchContentShellWithUrl to return a ContentShellActivity, this
shouldn't be necessary.

Nor the cast below.

[cjhopman, 2012/07/12 18:13:08]

Done.

+
+        // Make sure that the URL is set as expected.
+        ContentShellActivity contentShellActivity = (ContentShellActivity) activity;
+        assertEquals(URL,
+                contentShellActivity.getActiveShellView().getContentView().getUrl());
+    }
+}