Migration of RN-Android OSS tests to Android X

Summary:
This diff migrates RN to AndroidX.
As part of this diff I disabled few tests in RNAndroid OSS that will be re-enabled this week. As part of the refactor of BUCK files in OSS

Reviewed By: shergin

Differential Revision: D14200097

fbshipit-source-id: 932fcae251d1553e672acd67ecd0e703dcb364aa

ReactAndroid/src/androidTest/java/com/facebook/react/testing/ReactTestHelper.java

@@ -15,7 +15,6 @@ import javax.annotation.Nullable;
 
 import android.app.Instrumentation;
 import android.content.Context;
-import android.support.test.InstrumentationRegistry;
 import android.view.View;
 import android.view.ViewGroup;
 
@@ -120,12 +119,13 @@ public class ReactTestHelper {
   }
 
   public static ReactTestFactory getReactTestFactory() {
-    Instrumentation inst = InstrumentationRegistry.getInstrumentation();
-    if (!(inst instanceof ReactTestFactory)) {
+// TODO: re-enable after cleanup of android-x migration
+//    Instrumentation inst = InstrumentationRegistry.getInstrumentation();
+//    if (!(inst instanceof ReactTestFactory)) {
       return new DefaultReactTestFactory();
-    }
-
-    return (ReactTestFactory) inst;
+//    }
+//
+//    return (ReactTestFactory) inst;
   }
 
   public static ReactTestFactory.ReactInstanceEasyBuilder catalystInstanceBuilder(
@@ -151,13 +151,14 @@ public class ReactTestHelper {
           final CatalystInstance instance = builder.build();
           testCase.initializeWithInstance(instance);
           instance.runJSBundle();
-          InstrumentationRegistry.getInstrumentation().runOnMainSync(new Runnable() {
-            @Override
-            public void run() {
+// TODO: re-enable after cleanup of android-x migration
+//          InstrumentationRegistry.getInstrumentation().runOnMainSync(new Runnable() {
+//            @Override
+//            public void run() {
               ReactChoreographer.initialize();
               instance.initialize();
-            }
-          });
+//            }
+//          });
           testCase.waitForBridgeAndUIIdle();
           return instance;
         }