Fix focus and bounds calculations for guest frames.

content/browser/accessibility/browser_accessibility.cc

Index: content/browser/accessibility/browser_accessibility.cc
diff --git a/content/browser/accessibility/browser_accessibility.cc b/content/browser/accessibility/browser_accessibility.cc
index fb533aa85e5380b9a514b1228376785251dd4b0d..55c3ee888d94c3e341f0f9acd99afed8e0ad134e 100644
--- a/content/browser/accessibility/browser_accessibility.cc
+++ b/content/browser/accessibility/browser_accessibility.cc
@@ -183,7 +183,7 @@ gfx::Rect BrowserAccessibility::GetLocalBoundsRect() const {
   // Walk up the parent chain. Every time we encounter a Web Area, offset
   // based on the scroll bars and then offset based on the origin of that
   // nested web area.
-  BrowserAccessibility* parent = GetParent();
+  BrowserAccessibility* parent = GetParentForBoundsCalculation();
   bool need_to_offset_web_area =
       (GetRole() == ui::AX_ROLE_WEB_AREA ||
        GetRole() == ui::AX_ROLE_ROOT_WEB_AREA);
@@ -212,7 +212,7 @@ gfx::Rect BrowserAccessibility::GetLocalBoundsRect() const {
       }
       need_to_offset_web_area = true;
     }
-    parent = parent->GetParent();
+    parent = parent->GetParentForBoundsCalculation();
   }
 
   return bounds;
@@ -716,4 +716,18 @@ int BrowserAccessibility::GetStaticTextLenRecursive() const {
   return len;
 }
 
+BrowserAccessibility* BrowserAccessibility::GetParentForBoundsCalculation()
+    const {
+  if (!node_ || !manager_)
+    return NULL;
+  ui::AXNode* parent = node_->parent();
+  if (parent)
+    return manager_->GetFromAXNode(parent);
+
+  if (!manager_->delegate())
+    return NULL;
+
+  return manager_->delegate()->AccessibilityGetParentFrame();
+}
+
 }  // namespace content