Refactor CallbackHelper to base/test

base/test/android/javatests/src/org/chromium/base/test/util/CallbackHelper.java

Index: base/test/android/javatests/src/org/chromium/base/test/util/CallbackHelper.java
diff --git a/content/public/test/android/javatests/src/org/chromium/content/browser/test/util/CallbackHelper.java b/base/test/android/javatests/src/org/chromium/base/test/util/CallbackHelper.java
similarity index 99%
rename from content/public/test/android/javatests/src/org/chromium/content/browser/test/util/CallbackHelper.java
rename to base/test/android/javatests/src/org/chromium/base/test/util/CallbackHelper.java
index f5e13b7d7a31f5261c88b6e98a61bd52586f3e84..4eed3c0ca97a5e5c32fc819e103eb685ad73e75a 100644
--- a/content/public/test/android/javatests/src/org/chromium/content/browser/test/util/CallbackHelper.java
+++ b/base/test/android/javatests/src/org/chromium/base/test/util/CallbackHelper.java
@@ -2,7 +2,7 @@
 // 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.test.util;
+package org.chromium.base.test.util;
 
 import static org.chromium.base.test.util.ScalableTimeout.scaleTimeout;