Add verbose logging for native accessibility events.

content/browser/accessibility/browser_accessibility_manager_auralinux.h

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_AURALINUX_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_AURALINUX_H_
 
 #include "base/macros.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 
@@ skipping 10 matching lines @@
       AtkObject* parent_object,
       const ui::AXTreeUpdate& initial_tree,
       BrowserAccessibilityDelegate* delegate,
       BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory());
 
   ~BrowserAccessibilityManagerAuraLinux() override;
 
   static ui::AXTreeUpdate GetEmptyDocument();
 
   // Implementation BrowserAccessibilityManager methods
-  void NotifyAccessibilityEvent(ui::AXEvent event_type,
-                                BrowserAccessibility* node) override;
+  void NotifyAccessibilityEvent(
+      BrowserAccessibilityEvent::Source source,
+      ui::AXEvent event_type,
+      BrowserAccessibility* node) override;
 
   AtkObject* parent_object() { return parent_object_; }
 
  private:
   AtkObject* parent_object_;
 
   // Give BrowserAccessibilityManager::Create access to our constructor.
   friend class BrowserAccessibilityManager;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerAuraLinux);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_AURALINUX_H_