Fix Chrome OS virtual keyboard accessibility

ui/views/accessibility/ax_aura_obj_cache.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 UI_VIEWS_ACCESSIBILITY_AX_AURA_OBJ_CACHE_H_
 #define UI_VIEWS_ACCESSIBILITY_AX_AURA_OBJ_CACHE_H_
 
 #include <stdint.h>
 
 #include <map>
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
+#include "ui/accessibility/ax_enums.h"
 #include "ui/aura/client/focus_change_observer.h"
 #include "ui/aura/window_observer.h"
 #include "ui/views/views_export.h"
 
 namespace base {
 template <typename T> struct DefaultSingletonTraits;
 }
 
 namespace aura {
 namespace client {
@@ skipping 11 matching lines @@
 class VIEWS_EXPORT AXAuraObjCache
     : public aura::client::FocusChangeObserver,
       public aura::WindowObserver {
  public:
   // Get the single instance of this class.
   static AXAuraObjCache* GetInstance();
 
   class Delegate {
    public:
     virtual void OnChildWindowRemoved(AXAuraObjWrapper* parent) = 0;
+    virtual void OnEvent(AXAuraObjWrapper* aura_obj,
+                         ui::AXEvent event_type) = 0;
   };
 
   // Get or create an entry in the cache based on an Aura view.
   AXAuraObjWrapper* GetOrCreate(View* view);
   AXAuraObjWrapper* GetOrCreate(Widget* widget);
   AXAuraObjWrapper* GetOrCreate(aura::Window* window);
 
   // Gets an id given an Aura view.
   int32_t GetID(View* view) const;
   int32_t GetID(Widget* widget) const;
@@ skipping 22 matching lines @@
 
   // Get all top level windows this cache knows about.
   void GetTopLevelWindows(std::vector<AXAuraObjWrapper*>* children);
 
   // Get the object that has focus.
   AXAuraObjWrapper* GetFocus();
 
   // Send a notification that the focused view may have changed.
   void OnFocusedViewChanged();
 
+  // Tell our delegate to fire an event on a given object.
+  void FireEvent(AXAuraObjWrapper* aura_obj, ui::AXEvent event_type);
+
   // Indicates if this object's currently being destroyed.
   bool is_destroying() { return is_destroying_; }
 
   void SetDelegate(Delegate* delegate) { delegate_ = delegate; }
 
  private:
   friend struct base::DefaultSingletonTraits<AXAuraObjCache>;
 
   AXAuraObjCache();
   ~AXAuraObjCache() override;
 
   View* GetFocusedView();
 
   // aura::client::FocusChangeObserver override.
   void OnWindowFocused(aura::Window* gained_focus,
                        aura::Window* lost_focus) override;
 
   // aura::WindowObserver override.
   void OnWindowDestroying(aura::Window* window) override;
+  void OnWindowHierarchyChanged(const HierarchyChangeParams& params) override;
 
   template <typename AuraViewWrapper, typename AuraView>
   AXAuraObjWrapper* CreateInternal(
       AuraView* aura_view,
       std::map<AuraView*, int32_t>& aura_view_to_id_map);
 
   template <typename AuraView>
   int32_t GetIDInternal(
       AuraView* aura_view,
       const std::map<AuraView*, int32_t>& aura_view_to_id_map) const;
@@ skipping 15 matching lines @@
   bool is_destroying_;
 
   Delegate* delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(AXAuraObjCache);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ACCESSIBILITY_AX_AURA_OBJ_CACHE_H_