Revert "hwui: remove FatVector"

Revert "libui: rewrite Region with FatVector"

Revert submission 10248126-fatvector-region

Reason for revert: b/149254345
Reverted Changes:
I09dc2fddd:hwui: remove FatVector
I265c6c831:libui: rewrite Region with FatVector

also fix wrong license in FatVector.h

Test: boots
Bug: 149254345

Change-Id: I8ac66acb8b635324051edd41c5d4092c223157ff
diff --git a/libs/hwui/RenderNode.h b/libs/hwui/RenderNode.h
index c0ec217..d55e5b0 100644
--- a/libs/hwui/RenderNode.h
+++ b/libs/hwui/RenderNode.h
@@ -27,8 +27,6 @@
 
 #include <androidfw/ResourceTypes.h>
 
-#include <ui/FatVector.h>
-
 #include "AnimatorManager.h"
 #include "CanvasTransform.h"
 #include "Debug.h"
@@ -37,6 +35,7 @@
 #include "RenderProperties.h"
 #include "pipeline/skia/SkiaDisplayList.h"
 #include "pipeline/skia/SkiaLayer.h"
+#include "utils/FatVector.h"
 
 #include <vector>