Updated ReactNativeFiber HostConfig methods to mirror PR facebook#8563

Also removed the no-longer-necessary viewConfig from the NativeHostComponent. This config can be retrieved when necessary from commitUpdate() thanks to the newly-added type param

src/renderers/native/ReactNativeFiber.js

@@ -104,14 +104,15 @@ const NativeRenderer = ReactFiberReconciler({
 
   commitUpdate(
     instance : Instance,
+    type : string,
     oldProps : Props,
     newProps : Props,
     rootContainerInstance : Object,
     internalInstanceHandle : Object
   ) : void {
-    precacheFiberNode(internalInstanceHandle, instance._nativeTag);
+    const viewConfig = ReactNativeViewConfigRegistry.get(type);
 
-    const viewConfig = (instance : any).viewConfig;
+    precacheFiberNode(internalInstanceHandle, instance._nativeTag);
 
     const updatePayload = ReactNativeAttributePayload.diff(
       oldProps,
@@ -157,7 +158,6 @@ const NativeRenderer = ReactFiberReconciler({
     );
 
     const component = new NativeHostComponent(tag);
-    component.viewConfig = viewConfig;
 
     precacheFiberNode(internalInstanceHandle, tag);
 
@@ -185,6 +185,7 @@ const NativeRenderer = ReactFiberReconciler({
 
   finalizeInitialChildren(
     parentInstance : Instance,
+    type : string,
     props : Props,
     rootContainerInstance : Container,
   ) : void {
@@ -251,13 +252,17 @@ const NativeRenderer = ReactFiberReconciler({
 
   prepareUpdate(
     instance : Instance,
+    type : string,
     oldProps : Props,
     newProps : Props
   ) : boolean {
     return true;
   },
 
-  removeChild(parentInstance : Instance | Container, child : Instance | TextInstance) : void {
+  removeChild(
+    parentInstance : Instance | Container,
+    child : Instance | TextInstance
+  ) : void {
     recursivelyUncacheFiberNode(child);
 
     if (typeof parentInstance === 'number') {
@@ -270,7 +275,7 @@ const NativeRenderer = ReactFiberReconciler({
         [0], // removeAtIndices
       );
     } else {
-      const children = parentInstance._children
+      const children = parentInstance._children;
       const index = children.indexOf(child);
 
       children.splice(index, 1);