Reparent surface control for Webview overlay

When the root surface control changes, the parent of the Webview surface control must be changed.

Bug: 191900007
Test: switch app, or turn on/off screen
Change-Id: Ib7b34133776fd5944afc638bfee471afe6a17349
diff --git a/libs/hwui/renderthread/RenderThread.h b/libs/hwui/renderthread/RenderThread.h
index c5e3746..05d225b 100644
--- a/libs/hwui/renderthread/RenderThread.h
+++ b/libs/hwui/renderthread/RenderThread.h
@@ -94,6 +94,9 @@
 typedef ASurfaceTransaction* (*AST_create)();
 typedef void (*AST_delete)(ASurfaceTransaction* transaction);
 typedef void (*AST_apply)(ASurfaceTransaction* transaction);
+typedef void (*AST_reparent)(ASurfaceTransaction* aSurfaceTransaction,
+                             ASurfaceControl* aSurfaceControl,
+                             ASurfaceControl* newParentASurfaceControl);
 typedef void (*AST_setVisibility)(ASurfaceTransaction* transaction,
                                   ASurfaceControl* surface_control, int8_t visibility);
 typedef void (*AST_setZOrder)(ASurfaceTransaction* transaction, ASurfaceControl* surface_control,
@@ -113,6 +116,7 @@
     AST_create transactionCreateFunc;
     AST_delete transactionDeleteFunc;
     AST_apply transactionApplyFunc;
+    AST_reparent transactionReparentFunc;
     AST_setVisibility transactionSetVisibilityFunc;
     AST_setZOrder transactionSetZOrderFunc;
 };