Keep track of fixed positioning in accessibility tree.

third_party/WebKit/Source/modules/accessibility/AXImageMapLink.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXImageMapLink.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXImageMapLink.cpp b/third_party/WebKit/Source/modules/accessibility/AXImageMapLink.cpp
index b8bca55ac8655527c38485892b6eb95236cead4a..d15f95b375bde026a0260e7b2772f2f7c5774bd9 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXImageMapLink.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXImageMapLink.cpp
@@ -97,18 +97,16 @@ KURL AXImageMapLink::Url() const {
   return AreaElement()->Href();
 }
 
-void AXImageMapLink::GetRelativeBounds(
+bool AXImageMapLink::GetSimpleRelativeBounds(
     AXObject** out_container,
-    FloatRect& out_bounds_in_container,
-    SkMatrix44& out_container_transform) const {
+    FloatRect& out_bounds_in_container) const {
   *out_container = nullptr;
   out_bounds_in_container = FloatRect();
-  out_container_transform.setIdentity();
 
   HTMLAreaElement* area = AreaElement();
   HTMLMapElement* map = MapElement();
   if (!area || !map)
-    return;
+    return false;
 
   LayoutObject* layout_object;
   if (parent_ && parent_->IsAXLayoutObject())
@@ -117,10 +115,11 @@ void AXImageMapLink::GetRelativeBounds(
     layout_object = map->GetLayoutObject();
 
   if (!layout_object)
-    return;
+    return false;
 
   out_bounds_in_container = area->GetPath(layout_object).BoundingRect();
   *out_container = AxObjectCache().GetOrCreate(layout_object);
+  return true;
 }
 
 DEFINE_TRACE(AXImageMapLink) {