Select-to-speak event handler

chrome/browser/ui/aura/accessibility/automation_manager_aura.h

 // Copyright 2014 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 CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AUTOMATION_MANAGER_AURA_H_
 #define CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AUTOMATION_MANAGER_AURA_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 42 matching lines @@
                    ui::AXEvent event_type);
 
   void HandleAlert(content::BrowserContext* context, const std::string& text);
 
   // AutomationActionAdapter implementation.
   void PerformAction(const ui::AXActionData& data) override;
 
   // views::AXAuraObjCache::Delegate implementation.
   void OnChildWindowRemoved(views::AXAuraObjWrapper* parent) override;
 
+ protected:
+  AutomationManagerAura();
+  virtual ~AutomationManagerAura();
+
  private:
   friend struct base::DefaultSingletonTraits<AutomationManagerAura>;
 
-  AutomationManagerAura();
-  virtual ~AutomationManagerAura();
-
   // Reset all state in this manager.
   void ResetSerializer();
 
   void SendEvent(content::BrowserContext* context,
                  views::AXAuraObjWrapper* aura_obj,
                  ui::AXEvent event_type);
 
   // Whether automation support for views is enabled.
   bool enabled_;
 
   // Holds the active views-based accessibility tree. A tree currently consists
   // of all views descendant to a |Widget| (see |AXTreeSourceViews|).
   // A tree becomes active when an event is fired on a descendant view.
   std::unique_ptr<AXTreeSourceAura> current_tree_;
 
   // Serializes incremental updates on the currently active tree
   // |current_tree_|.
   std::unique_ptr<AuraAXTreeSerializer> current_tree_serializer_;
 
   bool processing_events_;
 
   std::vector<std::pair<views::AXAuraObjWrapper*, ui::AXEvent>> pending_events_;
 
   DISALLOW_COPY_AND_ASSIGN(AutomationManagerAura);
 };
 
 #endif  // CHROME_BROWSER_UI_AURA_ACCESSIBILITY_AUTOMATION_MANAGER_AURA_H_