Fix image map focus ring painting

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 0a9ceba63e2b79fc3575dcde39273e591aa22f2e..d80fa7923f5c2dc7628104ea19e3cd67fbcc3587 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXImageMapLink.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXImageMapLink.cpp
@@ -104,21 +104,9 @@ KURL AXImageMapLink::url() const
 
 LayoutRect AXImageMapLink::elementRect() const
 {
-    HTMLAreaElement* area = areaElement();
-    HTMLMapElement* map = mapElement();

[pdr., 2016/04/23 03:32:22]

We seem to have lost this code which uses the mapElement() to compute the rect.
Does that change behavior?

[Xianzhu, 2016/04/25 23:18:15]

I gave up changing this in this CL. Filed bug 606506 instead.

-    if (!area || !map)
-        return LayoutRect();
-
-    LayoutObject* layoutObject;
-    if (m_parent && m_parent->isAXLayoutObject())

[pdr., 2016/04/23 03:32:23]

We no longer have this accessibility code which seems useful for screenreaders.
Does this introduce a bug? Is it testable?

-        layoutObject = toAXLayoutObject(m_parent)->getLayoutObject();
-    else
-        layoutObject = map->layoutObject();
-
-    if (!layoutObject)
-        return LayoutRect();
-
-    return area->computeRect(layoutObject);
+    if (HTMLAreaElement* area = areaElement())
+        return area->computeAbsoluteRect();
+    return LayoutRect();
 }
 
 DEFINE_TRACE(AXImageMapLink)