Replace deprecated Android java test annotations

chrome/android/javatests/src/org/chromium/chrome/browser/feedback/ConnectivityCheckerTest.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.feedback;
 
-import android.test.suitebuilder.annotation.MediumTest;
+import android.support.test.filters.MediumTest;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.test.util.Feature;
 import org.chromium.chrome.browser.profiles.Profile;
 
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 
 /**
@@ skipping 108 matching lines @@
                             Profile.getLastUsedProfile(), url, timeoutMs, callback);
                 }
             }
         });
 
         assertTrue(semaphore.tryAcquire(TIMEOUT_MS, TimeUnit.MILLISECONDS));
         assertEquals("URL: " + url + ", got " + callback.getResult() + ", want " + expectedResult,
                 expectedResult, callback.getResult());
     }
 }