De-templatize ui::AXPosition

content/browser/accessibility/ax_platform_position.cc

Index: content/browser/accessibility/ax_platform_position.cc
diff --git a/content/browser/accessibility/ax_platform_position.cc b/content/browser/accessibility/ax_platform_position.cc
index cf01ea9c69ed50d6cc74d5a2193857cfc0eb060d..94c5c16e1ad89d50d356a24c58ceda4b602f77c5 100644
--- a/content/browser/accessibility/ax_platform_position.cc
+++ b/content/browser/accessibility/ax_platform_position.cc
@@ -14,8 +14,8 @@ AXPlatformPosition::AXPlatformPosition() {}
 
 AXPlatformPosition::~AXPlatformPosition() {}
 
-AXPlatformPosition::AXPositionInstance AXPlatformPosition::Clone() const {
-  return AXPositionInstance(new AXPlatformPosition(*this));
+AXPlatformPosition::ConcreteInstance AXPlatformPosition::CloneConcrete() const {
+  return ConcreteInstance(new AXPlatformPosition(*this));
 }
 
 base::string16 AXPlatformPosition::GetInnerText() const {