Make Windows accessibility event firing aware of guest / child 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 0a3719d4aaf401902b67ef3a8ffe55232bf0e35e..6ab4acdcf59fb6d982e80acb6442dc434e1d52af 100644
--- a/content/browser/accessibility/browser_accessibility.cc
+++ b/content/browser/accessibility/browser_accessibility.cc
@@ -184,7 +184,7 @@ 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);
@@ -213,7 +213,7 @@ gfx::Rect BrowserAccessibility::GetLocalBoundsRect() const {
       }
       need_to_offset_web_area = true;
     }
-    parent = parent->GetParent();
+    parent = parent->GetParentForBoundsCalculation();
   }
 
   return bounds;
@@ -723,4 +723,23 @@ 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;
+
+  BrowserAccessibility* host_node =
+      manager_->delegate()->AccessibilityGetParentFrame();
+  if (!host_node)
+    return NULL;
+
+  return host_node;
+}
+
 }  // namespace content