Adding @CountEnum to simple enums in xplat/js

Summary: Using The Count to transform enums to ints in production builds: https://our.intern.facebook.com/intern/wiki/Android-java-transforms/the-count/

Reviewed By: achen1

Differential Revision: D9614432

fbshipit-source-id: 1b1a197ad8f4962712d6006ab07b3beb3eaf2432

ReactAndroid/src/main/java/com/facebook/react/processing/BUCK

@@ -18,6 +18,7 @@ rn_java_library(
     source = "7",
     target = "7",
     deps = [
+        react_native_dep("java/com/facebook/thecount:thecount"),
         react_native_dep("third-party/java/infer-annotations:infer-annotations"),
         react_native_dep("third-party/java/javapoet:javapoet"),
         react_native_dep("third-party/java/jsr-305:jsr-305"),

ReactAndroid/src/main/java/com/facebook/react/processing/ReactPropertyProcessor.java

@@ -53,6 +53,8 @@ import javax.lang.model.type.TypeMirror;
 import javax.lang.model.util.Elements;
 import javax.lang.model.util.Types;
 
+import com.facebook.thecount.api.CountEnum;
+
 /**
  * This annotation processor crawls subclasses of ReactShadowNode and ViewManager and finds their
  * exported properties with the @ReactProp or @ReactGroupProp annotation. It generates a class
@@ -549,6 +551,7 @@ public class ReactPropertyProcessor extends AbstractProcessor {
     }
   }
 
+  @CountEnum
   private enum SettableType {
     VIEW_MANAGER,
     SHADOW_NODE