Refactor types used during yoga meassure calls

Summary: This diff refactors the types used when Yoga requires to measure the size of a View in C++

Reviewed By: shergin

Differential Revision: D13124086

fbshipit-source-id: 89dfe80bb41b4fb2eaba84af630d52ef2509b1e1

ReactAndroid/src/main/java/com/facebook/react/uimanager/ViewManager.java

@@ -213,7 +213,7 @@ public abstract class ViewManager<T extends View, C extends ReactShadowNode>
     return null;
   }
 
-  public float[] measure(
+  public long measure(
       ReactContext context,
       T view,
       ReadableNativeMap localData,
@@ -222,6 +222,6 @@ public abstract class ViewManager<T extends View, C extends ReactShadowNode>
       YogaMeasureMode widthMode,
       float height,
       YogaMeasureMode heightMode) {
-    return null;
+    return 0;
   }
 }