Keep track of fixed positioning in accessibility tree.

third_party/WebKit/Source/modules/accessibility/AXInlineTextBox.h

Index: third_party/WebKit/Source/modules/accessibility/AXInlineTextBox.h
diff --git a/third_party/WebKit/Source/modules/accessibility/AXInlineTextBox.h b/third_party/WebKit/Source/modules/accessibility/AXInlineTextBox.h
index 923cbcf264051871f96ace4b165fa5be28dcad95..725064c8d5eb449aa40398a3509599619a7f32c1 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXInlineTextBox.h
+++ b/third_party/WebKit/Source/modules/accessibility/AXInlineTextBox.h
@@ -59,9 +59,9 @@ class AXInlineTextBox final : public AXObject {
                  AXObject::AXObjectVector* name_objects) const override;
   void TextCharacterOffsets(Vector<int>&) const override;
   void GetWordBoundaries(Vector<AXRange>&) const override;
-  void GetRelativeBounds(AXObject** out_container,
-                         FloatRect& out_bounds_in_container,
-                         SkMatrix44& out_container_transform) const override;
+  bool GetSimpleRelativeBounds(
+      AXObject** out_container,
+      FloatRect& out_bounds_in_container) const override;
   AXObject* ComputeParent() const override;
   AccessibilityTextDirection GetTextDirection() const override;
   Node* GetNode() const override { return inline_text_box_->GetNode(); }