Add directional clipping command manager.

Summary: Add directional aware clipping to DrawCommandManager.  Currently not attached to FlatViewGroup logic, with the plan to keep this unattached until we are clipping the way we want to in the final state.

Reviewed By: ahmedre

Differential Revision: D3622253

ReactAndroid/src/main/java/com/facebook/react/flat/StateBuilder.java

@@ -536,6 +536,17 @@ import com.facebook.react.uimanager.events.EventDispatcher;
       ensureBackingViewIsCreated(node);
 
       addNativeChild(node);
+      updated = collectStateForMountableNode(
+          node,
+          0, // left - left
+          0, // top - top
+          right - left,
+          bottom - top,
+          parentClipLeft - left,
+          parentClipTop - top,
+          parentClipRight - left,
+          parentClipBottom - top);
+
       if (!parentIsAndroidView) {
         mDrawCommands.add(node.collectDrawView(
             left,
@@ -548,17 +559,6 @@ import com.facebook.react.uimanager.events.EventDispatcher;
             parentClipBottom));
       }
 
-      updated = collectStateForMountableNode(
-          node,
-          0, // left - left
-          0, // top - top
-          right - left,
-          bottom - top,
-          parentClipLeft - left,
-          parentClipTop - top,
-          parentClipRight - left,
-          parentClipBottom - top);
-
       if (!needsCustomLayout) {
         updateViewBounds(node, left, top, right, bottom);
       }