Initial support for native accessibility in ARC

content/browser/accessibility/browser_accessibility_manager.h

Index: content/browser/accessibility/browser_accessibility_manager.h
diff --git a/content/browser/accessibility/browser_accessibility_manager.h b/content/browser/accessibility/browser_accessibility_manager.h
index 84bb687b7f334d5d7c55fd9a11700fc3384315d4..9f6368d98ab2e80dee4b6b60e52a107de27ea8ac 100644
--- a/content/browser/accessibility/browser_accessibility_manager.h
+++ b/content/browser/accessibility/browser_accessibility_manager.h
@@ -14,7 +14,6 @@
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "build/build_config.h"
-#include "content/browser/accessibility/ax_tree_id_registry.h"
 #include "content/browser/accessibility/browser_accessibility_event.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/ax_event_notification_details.h"
@@ -22,6 +21,7 @@
 #include "ui/accessibility/ax_action_data.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/accessibility/ax_serializable_tree.h"
+#include "ui/accessibility/ax_tree_id_registry.h"
 #include "ui/accessibility/ax_tree_update.h"
 #include "ui/gfx/native_widget_types.h"
 
@@ -116,7 +116,7 @@ class CONTENT_EXPORT BrowserAccessibilityManager : public ui::AXTreeDelegate {
       BrowserAccessibilityFactory* factory = new BrowserAccessibilityFactory());
 
   static BrowserAccessibilityManager* FromID(
-      AXTreeIDRegistry::AXTreeID ax_tree_id);
+      ui::AXTreeIDRegistry::AXTreeID ax_tree_id);
 
   ~BrowserAccessibilityManager() override;
 
@@ -323,7 +323,7 @@ class CONTENT_EXPORT BrowserAccessibilityManager : public ui::AXTreeDelegate {
       int end_offset);
 
   // Accessors.
-  AXTreeIDRegistry::AXTreeID ax_tree_id() const { return ax_tree_id_; }
+  ui::AXTreeIDRegistry::AXTreeID ax_tree_id() const { return ax_tree_id_; }
 
   // AXTreeDelegate implementation.
   void OnNodeDataWillChange(ui::AXTree* tree,
@@ -455,7 +455,7 @@ class CONTENT_EXPORT BrowserAccessibilityManager : public ui::AXTreeDelegate {
   bool connected_to_parent_tree_node_;
 
   // The global ID of this accessibility tree.
-  AXTreeIDRegistry::AXTreeID ax_tree_id_;
+  ui::AXTreeIDRegistry::AXTreeID ax_tree_id_;
 
   // If this tree has a parent tree, this is the cached ID of the parent
   // node within that parent tree. It's computed as needed and cached for