Fix focus and bounds calculations for guest frames.

content/browser/accessibility/browser_accessibility.h

Index: content/browser/accessibility/browser_accessibility.h
diff --git a/content/browser/accessibility/browser_accessibility.h b/content/browser/accessibility/browser_accessibility.h
index 6b6361df29d195c3914002d3398c029f2446faf0..64811bd6f9a874a7d650dc7a4cd67e4ae65383ca 100644
--- a/content/browser/accessibility/browser_accessibility.h
+++ b/content/browser/accessibility/browser_accessibility.h
@@ -264,6 +264,11 @@ class CONTENT_EXPORT BrowserAccessibility {
   // including this object if it's static text.
   int GetStaticTextLenRecursive() const;
 
+  // Similar to GetParent(), but includes nodes that are the host of a
+  // subtree rather than skipping over them - because they contain important
+  // bounds offsets.
+  BrowserAccessibility* GetParentForBoundsCalculation() const;
+
   std::string name_;
   std::string value_;