Add verbose logging for native accessibility events.

content/browser/accessibility/browser_accessibility_manager_mac.h

Index: content/browser/accessibility/browser_accessibility_manager_mac.h
diff --git a/content/browser/accessibility/browser_accessibility_manager_mac.h b/content/browser/accessibility/browser_accessibility_manager_mac.h
index 715081920c4fd586bb6d0fb91ca8b92d371be8f7..74063b7d8410d6b8ad552748c71318b164866fd6 100644
--- a/content/browser/accessibility/browser_accessibility_manager_mac.h
+++ b/content/browser/accessibility/browser_accessibility_manager_mac.h
@@ -35,8 +35,10 @@ class CONTENT_EXPORT BrowserAccessibilityManagerMac
   BrowserAccessibility* GetFocus() override;
 
   // Implementation of BrowserAccessibilityManager.
-  void NotifyAccessibilityEvent(ui::AXEvent event_type,
-                                BrowserAccessibility* node) override;
+  void NotifyAccessibilityEvent(
+      BrowserAccessibilityEvent::Source source,
+      ui::AXEvent event_type,
+      BrowserAccessibility* node) override;
 
   void OnAccessibilityEvents(
       const std::vector<AXEventNotificationDetails>& details) override;