Move base Java utils to base/test/android/javatests.

base/android/javatests/src/org/chromium/base/test/InstrumentationUtils.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.base.test;
-
-import android.app.Instrumentation;
-
-import java.util.concurrent.Callable;
-import java.util.concurrent.ExecutionException;
-import java.util.concurrent.FutureTask;
-
-/**
- * Utility methods built around the android.app.Instrumentation class.
- */
-public final class InstrumentationUtils {
-
-    private InstrumentationUtils() {
-    }
-
-    public static <R> R runOnMainSyncAndGetResult(Instrumentation instrumentation,
-            Callable<R> callable) throws Throwable {
-        FutureTask<R> task = new FutureTask<R>(callable);
-        instrumentation.runOnMainSync(task);
-        try {
-            return task.get();
-        } catch (ExecutionException e) {
-            // Unwrap the cause of the exception and re-throw it.
-            throw e.getCause();
-        }
-    }
-}