Convert MultiActivityTestBase children to JUnit4

chrome/test/android/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/android/rules.gni")
 
 android_library("chrome_java_test_support") {
   testonly = true
   java_files = [
     "javatests/src/org/chromium/chrome/test/BottomSheetTestCaseBase.java",
     "javatests/src/org/chromium/chrome/test/ChromeActivityTestCaseBase.java",
     "javatests/src/org/chromium/chrome/test/ChromeActivityTestRule.java",
     "javatests/src/org/chromium/chrome/test/ChromeActivityTestCommon.java",
     "javatests/src/org/chromium/chrome/test/ChromeInstrumentationTestRunner.java",
     "javatests/src/org/chromium/chrome/test/ChromeJUnit4ClassRunner.java",
     "javatests/src/org/chromium/chrome/test/ChromeTabbedActivityTestBase.java",
     "javatests/src/org/chromium/chrome/test/ChromeTabbedActivityTestCommon.java",
     "javatests/src/org/chromium/chrome/test/ChromeTabbedActivityTestRule.java",
     "javatests/src/org/chromium/chrome/test/DocumentActivityTestBase.java",
     "javatests/src/org/chromium/chrome/test/gcore/MockChromeGoogleApiClient.java",
     "javatests/src/org/chromium/chrome/test/invalidation/IntentSavingContext.java",
     "javatests/src/org/chromium/chrome/test/MultiActivityTestBase.java",
+    "javatests/src/org/chromium/chrome/test/MultiActivityTestCommon.java",
+    "javatests/src/org/chromium/chrome/test/MultiActivityTestRule.java",
     "javatests/src/org/chromium/chrome/test/omaha/AttributeFinder.java",
     "javatests/src/org/chromium/chrome/test/omaha/MockRequestGenerator.java",
     "javatests/src/org/chromium/chrome/test/partnercustomizations/TestPartnerBrowserCustomizationsDelayedProvider.java",
     "javatests/src/org/chromium/chrome/test/partnercustomizations/TestPartnerBrowserCustomizationsProvider.java",
     "javatests/src/org/chromium/chrome/test/TestContentProvider.java",
     "javatests/src/org/chromium/chrome/test/util/ActivityUtils.java",
     "javatests/src/org/chromium/chrome/test/util/ApplicationData.java",
     "javatests/src/org/chromium/chrome/test/util/ApplicationTestUtils.java",
     "javatests/src/org/chromium/chrome/test/util/BookmarkTestUtil.java",
     "javatests/src/org/chromium/chrome/test/util/browser/contextmenu/ContextMenuUtils.java",
@@ skipping 59 matching lines @@
     "//third_party/android_tools:android_support_design_java",
     "//third_party/android_tools:android_support_transition_java",
     "//third_party/android_tools:android_support_v7_appcompat_java",
     "//third_party/android_tools:android_support_v7_recyclerview_java",
     "//third_party/jsr-305:jsr_305_javalib",
     "//third_party/junit",
     "//ui/android:ui_java",
     google_play_services_library,
   ]
 }