Add GetScreenBoundsRect to ui::AXPlatformNodeDelegate

ui/accessibility/platform/ax_platform_node_base.cc

Index: ui/accessibility/platform/ax_platform_node_base.cc
diff --git a/ui/accessibility/platform/ax_platform_node_base.cc b/ui/accessibility/platform/ax_platform_node_base.cc
index b72f5e8e64a57102769b41e5588044729e2ac6ac..4eaec9bd1f3c0d0a0a1f09f7af61a7a740cf0470 100644
--- a/ui/accessibility/platform/ax_platform_node_base.cc
+++ b/ui/accessibility/platform/ax_platform_node_base.cc
@@ -24,7 +24,8 @@ const AXNodeData& AXPlatformNodeBase::GetData() const {
 gfx::Rect AXPlatformNodeBase::GetBoundsInScreen() const {
   CHECK(delegate_);
   gfx::Rect bounds = gfx::ToEnclosingRect(GetData().location);
-  bounds.Offset(delegate_->GetGlobalCoordinateOffset());
+  gfx::Rect screen_bounds = delegate_->GetScreenBoundsRect();
+  bounds.Offset(screen_bounds.x(), screen_bounds.y());

[dmazzoni, 2017/04/04 15:05:19]

I don't think this should be here.

It should just call delegate_->GetScreenBoundsRect(), nothing more should be
needed.

That iframe transform example would fail here - the width and height would be
incorrect at minimum.

   return bounds;
 }