Less strict checked state changes and introduce disabled state for content

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 424 matching lines @@
 
 void AXPlatformNodeAuraLinux::GetAtkState(AtkStateSet* atk_state_set) {
   uint32_t state = GetData().state;
 
   if (state & (1 << ui::AX_STATE_CHECKED))
     atk_state_set_add_state(atk_state_set, ATK_STATE_CHECKED);
   if (state & (1 << ui::AX_STATE_DEFAULT))
     atk_state_set_add_state(atk_state_set, ATK_STATE_DEFAULT);
   if (state & (1 << ui::AX_STATE_EDITABLE))
     atk_state_set_add_state(atk_state_set, ATK_STATE_EDITABLE);
-  if (state & (1 << ui::AX_STATE_ENABLED))
+  if (!(state & (1 << ui::AX_STATE_DISABLED)))
     atk_state_set_add_state(atk_state_set, ATK_STATE_ENABLED);
   if (state & (1 << ui::AX_STATE_EXPANDED))
     atk_state_set_add_state(atk_state_set, ATK_STATE_EXPANDED);
   if (state & (1 << ui::AX_STATE_FOCUSABLE))
     atk_state_set_add_state(atk_state_set, ATK_STATE_FOCUSABLE);
   if (state & (1 << ui::AX_STATE_PRESSED))
     atk_state_set_add_state(atk_state_set, ATK_STATE_PRESSED);
   if (state & (1 << ui::AX_STATE_SELECTABLE))
     atk_state_set_add_state(atk_state_set, ATK_STATE_SELECTABLE);
   if (state & (1 << ui::AX_STATE_SELECTED))
@@ skipping 73 matching lines @@
 
 void AXPlatformNodeAuraLinux::GetSize(gint* width, gint* height) {
   gfx::Rect rect_size = GetData().location;
   if (width)
     *width = rect_size.width();
   if (height)
     *height = rect_size.height();
 }
 
 }  // namespace ui