Adds ContentShellTest.apk and very simple test.

content/shell/android/javatests/src/org/chromium/content_shell/ContentShellTestBase.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.content.ComponentName;
+import android.content.Intent;
+import android.net.Uri;
+import android.test.ActivityInstrumentationTestCase2;
+
+/**
+ * Base test class for all ContentShell based tests.
+ */
+public class ContentShellTestBase extends ActivityInstrumentationTestCase2<ContentShellActivity> {
+
+    public ContentShellTestBase() {
+        super(ContentShellActivity.class);
+    }
+
+    /**
+     * Starts the ContentShell activity and loads the given URL.
+     */
+    protected ContentShellActivity launchContentShellWithUrl(String url) {
+        Intent intent = new Intent(Intent.ACTION_MAIN);
+        intent.addCategory(Intent.CATEGORY_LAUNCHER);
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        intent.setData(Uri.parse(url));
+        intent.setComponent(new ComponentName(getInstrumentation().getTargetContext(),
+              ContentShellActivity.class));
+        return (ContentShellActivity) getInstrumentation().startActivitySync(intent);
+    }
+}