Fix accessible touch exploration inside of iframes.

content/browser/accessibility/browser_accessibility_manager.h

Index: content/browser/accessibility/browser_accessibility_manager.h
diff --git a/content/browser/accessibility/browser_accessibility_manager.h b/content/browser/accessibility/browser_accessibility_manager.h
index 4888cc6459a73e06c06b9ddde22c9cbf7e9bed79..d3d4f03c2a00e5677f7907f994f6e420cecb21a9 100644
--- a/content/browser/accessibility/browser_accessibility_manager.h
+++ b/content/browser/accessibility/browser_accessibility_manager.h
@@ -250,6 +250,11 @@ class CONTENT_EXPORT BrowserAccessibilityManager : public ui::AXTreeDelegate {
       int request_id, int match_index, int start_id, int start_offset,
       int end_id, int end_offset);
 
+  // Called in response to a hit test, when the object hit has a child frame
+  // (like an iframe element or browser plugin), and we need to do another
+  // hit test recursively.
+  void OnChildFrameHitTestResult(const gfx::Point& point, int hit_obj_id);
+
   // This is called when the user has committed to a find in page query,
   // e.g. by pressing enter or tapping on the next / previous result buttons.
   // If a match has already been received for this request id,