pre add new systrace TRACE_TAG_REACT_VIEW

Reviewed By: foghina

Differential Revision: D2717692

fb-gh-sync-id: 572b9286bd5be9f15ba3295e29770c4d33ee7590

ReactAndroid/src/main/java/com/facebook/systrace/Systrace.java

@@ -21,6 +21,7 @@ public class Systrace {
   public static final long TRACE_TAG_REACT_JAVA_BRIDGE = 0L;
   public static final long TRACE_TAG_REACT_FRESCO = 0L;
   public static final long TRACE_TAG_REACT_APPS = 0L;
+  public static final long TRACE_TAG_REACT_VIEW = 0L;
 
   public enum EventScope {
     THREAD('t'),