a11y: Exclude children of nested keyboard accessible controls from a11y tree.

ui/accessibility/platform/ax_platform_node_auralinux.cc

 // Copyright 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.
 
 #include "ui/accessibility/platform/ax_platform_node_auralinux.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 346 matching lines @@
   return AX_PLATFORM_NODE_AURALINUX(atk_object);
 }
 
 void ax_platform_node_auralinux_detach(
     AXPlatformNodeAuraLinuxObject* atk_object) {
   atk_object->m_object = nullptr;
 }
 
 G_END_DECLS
 
-//
-// AXPlatformNodeAuraLinux implementation.
-//
-
 namespace ui {
 
 // static
 AXPlatformNode* AXPlatformNode::Create(AXPlatformNodeDelegate* delegate) {
   AXPlatformNodeAuraLinux* node = new AXPlatformNodeAuraLinux();
   node->Init(delegate);
   return node;
 }
 
 // static
+AX_EXPORT AXPlatformNode* AXPlatformNode::FromNativeViewAccessible(
+    gfx::NativeViewAccessible accessible) {
+  return AtkObjectToAXPlatformNodeAuraLinux(accessible);
+}
+
+//
+// AXPlatformNodeAuraLinux implementation.
+//
+
+// static
 AXPlatformNode* AXPlatformNodeAuraLinux::application_ = nullptr;
 
 // static
 void AXPlatformNodeAuraLinux::SetApplication(AXPlatformNode* application) {
   application_ = application;
 }
 
 // static
 void AXPlatformNodeAuraLinux::StaticInitialize(
     scoped_refptr<base::TaskRunner> init_task_runner) {
@@ skipping 159 matching lines @@
 
 void AXPlatformNodeAuraLinux::GetSize(gint* width, gint* height) {
   gfx::Rect rect_size = gfx::ToEnclosingRect(GetData().location);
   if (width)
     *width = rect_size.width();
   if (height)
     *height = rect_size.height();
 }
 
 }  // namespace ui