Add a window property to associate RWHVA with its child AX tree ID

content/browser/renderer_host/render_widget_host_view_base.h

 // Copyright (c) 2012 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_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 13 matching lines @@
 #include "content/browser/renderer_host/event_with_latency_info.h"
 #include "content/common/content_export.h"
 #include "content/common/input/input_event_ack_state.h"
 #include "content/public/browser/render_widget_host_view.h"
 #include "content/public/common/screen_info.h"
 #include "ipc/ipc_listener.h"
 #include "third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationType.h"
 #include "third_party/WebKit/public/web/WebPopupType.h"
 #include "third_party/WebKit/public/web/WebTextDirection.h"
 #include "third_party/skia/include/core/SkImageInfo.h"
+#include "ui/accessibility/ax_tree_id_registry.h"
 #include "ui/base/ime/text_input_mode.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/display/display.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/range/range.h"
 #include "ui/surface/transport_dib.h"
 
 class SkBitmap;
 
@@ skipping 159 matching lines @@
   // If |for_root_frame| is true, creates a BrowserAccessibilityManager
   // suitable for the root frame, which may be linked to its native
   // window container.
   virtual BrowserAccessibilityManager* CreateBrowserAccessibilityManager(
       BrowserAccessibilityDelegate* delegate, bool for_root_frame);
 
   virtual void AccessibilityShowMenu(const gfx::Point& point);
   virtual gfx::Point AccessibilityOriginInScreen(const gfx::Rect& bounds);
   virtual gfx::AcceleratedWidget AccessibilityGetAcceleratedWidget();
   virtual gfx::NativeViewAccessible AccessibilityGetNativeViewAccessible();
-
+  virtual void UpdateAXTreeID(ui::AXTreeIDRegistry::AXTreeID id) {}

[sky, 2017/03/08 23:51:12]

SetMainFrameAXTreeID ?

[dmazzoni, 2017/03/09 00:18:19]

Sure, done

   // Informs that the focused DOM node has changed.
   virtual void FocusedNodeChanged(bool is_editable_node,
                                   const gfx::Rect& node_bounds_in_screen) {}
 
   virtual void OnSwapCompositorFrame(uint32_t compositor_frame_sink_id,
                                      cc::CompositorFrame frame) {}
 
   // This method exists to allow removing of displayed graphics, after a new
   // page has been loaded, to prevent the displayed URL from being out of sync
   // with what is visible on screen.
@@ skipping 230 matching lines @@
   base::ObserverList<RenderWidgetHostViewBaseObserver> observers_;
 
   base::WeakPtrFactory<RenderWidgetHostViewBase> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewBase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_