Fix Mac accessibility window attribute inside child frames.

content/browser/accessibility/browser_accessibility_manager.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_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 17 matching lines @@
 
 namespace content {
 class BrowserAccessibility;
 class BrowserAccessibilityManager;
 #if defined(OS_ANDROID)
 class BrowserAccessibilityManagerAndroid;
 #elif defined(OS_WIN)
 class BrowserAccessibilityManagerWin;
 #elif defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_X11)
 class BrowserAccessibilityManagerAuraLinux;
+#elif defined(OS_MACOSX)
+class BrowserAccessibilityManagerMac;
 #endif
 
 class SiteInstance;
 
 // For testing.
 CONTENT_EXPORT ui::AXTreeUpdate MakeAXTreeUpdate(
     const ui::AXNodeData& node,
     const ui::AXNodeData& node2 = ui::AXNodeData(),
     const ui::AXNodeData& node3 = ui::AXNodeData(),
     const ui::AXNodeData& node4 = ui::AXNodeData(),
@@ skipping 221 matching lines @@
 
 #if defined(OS_ANDROID)
   BrowserAccessibilityManagerAndroid* ToBrowserAccessibilityManagerAndroid();
 #endif
 
 #if defined(OS_LINUX) && !defined(OS_CHROMEOS) && defined(USE_X11)
   BrowserAccessibilityManagerAuraLinux*
       ToBrowserAccessibilityManagerAuraLinux();
 #endif
 
+#if defined(OS_MACOSX)
+  BrowserAccessibilityManagerMac* ToBrowserAccessibilityManagerMac();
+#endif
+
   // Return the object that has focus, starting at the top of the frame tree.
   virtual BrowserAccessibility* GetFocus();
 
   // Return the object that has focus, only considering this frame and
   // descendants.
   BrowserAccessibility* GetFocusFromThisOrDescendantFrame();
 
   // Given a focused node |focus|, returns a descendant of that node if it
   // has an active descendant, otherwise returns |focus|.
   BrowserAccessibility* GetActiveDescendant(BrowserAccessibility* focus);
@@ skipping 156 matching lines @@
   // node within that parent tree. It's computed as needed and cached for
   // speed so that it can be accessed quickly if it hasn't changed.
   int parent_node_id_from_parent_tree_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_H_