Create ContentShellActivityTestRule and BaseJUnitRunner

content/public/android/javatests/src/org/chromium/content/browser/ContentDetectionTestBase.java

 // Copyright 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.browser;
 
 import static org.chromium.base.test.util.ScalableTimeout.scaleTimeout;
 
 import android.app.Activity;
 import android.net.Uri;
@@ skipping 127 matching lines @@
         OnPageFinishedHelper onPageFinishedHelper =
                 callbackHelperContainer.getOnPageFinishedHelper();
         int currentCallCount = onPageFinishedHelper.getCallCount();
 
         DOMUtils.clickNode(getContentViewCore(), id);
 
         onPageFinishedHelper.waitForCallback(currentCallCount, 1, WAIT_TIMEOUT_SECONDS,
                 TimeUnit.SECONDS);
         getInstrumentation().waitForIdleSync();
     }
-}
+}