Create ChromeActivityTestRule for converting JUnit4 tests

chrome/test/android/BUILD.gn

Index: chrome/test/android/BUILD.gn
diff --git a/chrome/test/android/BUILD.gn b/chrome/test/android/BUILD.gn
index e747858cf654522fd96e5daed4f6ac0bfb4cb038..e05a9f92a9ea5c3ad2944ece4487211ee6be289b 100644
--- a/chrome/test/android/BUILD.gn
+++ b/chrome/test/android/BUILD.gn
@@ -9,6 +9,8 @@ android_library("chrome_java_test_support") {
   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",
@@ -83,6 +85,7 @@ android_library("chrome_java_test_support") {
     "//net/android:net_java",
     "//net/android:net_java_test_support",
     "//testing/android/reporter:reporter_java",
+    "//third_party/android_support_test_runner:rules_java",
     "//third_party/android_support_test_runner:runner_java",
     "//third_party/android_tools:android_support_design_java",
     "//third_party/android_tools:android_support_transition_java",