AXTreeCombiner no longer needs to convert to global coordinates.

ui/accessibility/ax_tree_combiner.h

Index: ui/accessibility/ax_tree_combiner.h
diff --git a/ui/accessibility/ax_tree_combiner.h b/ui/accessibility/ax_tree_combiner.h
index 37b9fa56879a37369cdd9e4995d2f0c2492872b6..ce8fbc792d50b63279b571e9bbf5a74cb29617d4 100644
--- a/ui/accessibility/ax_tree_combiner.h
+++ b/ui/accessibility/ax_tree_combiner.h
@@ -9,7 +9,6 @@
 
 #include "ui/accessibility/ax_export.h"
 #include "ui/accessibility/ax_tree_update.h"
-#include "ui/gfx/transform.h"
 
 namespace ui {
 
@@ -19,8 +18,7 @@ namespace ui {
 //
 // Since node IDs are relative to each ID, it has to renumber all of the IDs
 // and update all of the attributes that reference IDs of other nodes to
-// ensure they point to the right node. It also applies transformations to
-// local bounding rectangles to make them global.
+// ensure they point to the right node.
 //
 // It also makes sure the final combined tree points to the correct focused
 // node across all of the trees based on the focused tree ID of the root tree.
@@ -45,7 +43,6 @@ class AX_EXPORT AXTreeCombiner {
   std::map<int32_t, const AXTreeUpdate*> tree_id_map_;
   std::map<std::pair<int32_t, int32_t>, int32_t> tree_id_node_id_map_;
   AXTreeUpdate combined_;
-  gfx::Transform transform_;
 };