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/renderthread/RenderThread.cpp b/libs/hwui/renderthread/RenderThread.cpp
index 206b58f..cae3e3b 100644
--- a/libs/hwui/renderthread/RenderThread.cpp
+++ b/libs/hwui/renderthread/RenderThread.cpp
@@ -27,6 +27,7 @@
 #include "pipeline/skia/SkiaOpenGLPipeline.h"
 #include "pipeline/skia/SkiaVulkanPipeline.h"
 #include "renderstate/RenderState.h"
+#include "utils/FatVector.h"
 #include "utils/TimeUtils.h"
 #include "utils/TraceUtils.h"
 
@@ -39,8 +40,6 @@
 #include <utils/Mutex.h>
 #include <thread>
 
-#include <ui/FatVector.h>
-
 namespace android {
 namespace uirenderer {
 namespace renderthread {