Re-land: Resurrect Aura Linux accessibility.

ui/accessibility/platform/ax_platform_node_base.h

Index: ui/accessibility/platform/ax_platform_node_base.h
diff --git a/ui/accessibility/platform/ax_platform_node_base.h b/ui/accessibility/platform/ax_platform_node_base.h
index 7555ec0fc800de064fa4ed610a41726ff515a0fd..324b2394e28610123b4903608818ebf8ae45881f 100644
--- a/ui/accessibility/platform/ax_platform_node_base.h
+++ b/ui/accessibility/platform/ax_platform_node_base.h
@@ -61,6 +61,8 @@ class AXPlatformNodeBase : public AXPlatformNode {
   base::string16 GetString16Attribute(
       ui::AXStringAttribute attribute) const;
 
+  AXPlatformNodeDelegate* delegate_;  // Weak. Owns this.
+
  protected:
   AXPlatformNodeBase();
   ~AXPlatformNodeBase() override;
@@ -70,7 +72,7 @@ class AXPlatformNodeBase : public AXPlatformNode {
   static AXPlatformNodeBase* FromNativeViewAccessible(
       gfx::NativeViewAccessible accessible);
 
-  AXPlatformNodeDelegate* delegate_;  // Weak. Owns this.
+
 
  private:
   DISALLOW_COPY_AND_ASSIGN(AXPlatformNodeBase);