Web app splash screen: add even moar tests.

chrome/android/javatests/src/org/chromium/chrome/browser/webapps/WebappActivityTestBase.java

 // Copyright 2015 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.chrome.browser.webapps;
 
 import android.content.Intent;
 import android.net.Uri;
 
 import org.chromium.base.ThreadUtils;
@@ skipping 155 matching lines @@
     }
 
     /**
      * Waits for the splash screen to be hidden and return whether it was hidden
      * (true) or if it timed out (false).
      */
     protected boolean waitUntilSplashscreenHides() throws InterruptedException {
         return CriteriaHelper.pollForCriteria(new Criteria() {
                 @Override
                 public boolean isSatisfied() {
-                    return !getActivity().isSplashScreenVisibleForTest();
+                    return !getActivity().isSplashScreenVisibleForTests();
                 }
             });
     }
 }