Views a11y: Implement AXPlatformNode::FromNativeViewAccessible on all platforms.

ui/views/accessibility/native_view_accessibility_win.cc

Index: ui/views/accessibility/native_view_accessibility_win.cc
diff --git a/ui/views/accessibility/native_view_accessibility_win.cc b/ui/views/accessibility/native_view_accessibility_win.cc
index 93910a19c99b61f3f1e89a7b9490ff922ee062ba..42e504669364f7132ea3263813feb39a6cdf0c7e 100644
--- a/ui/views/accessibility/native_view_accessibility_win.cc
+++ b/ui/views/accessibility/native_view_accessibility_win.cc
@@ -6,11 +6,9 @@
 
 #include <oleacc.h>
 
-#include <memory>
 #include <set>
 #include <vector>
 
-#include "base/memory/ptr_util.h"
 #include "base/memory/singleton.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/scoped_comptr.h"
@@ -30,9 +28,8 @@
 namespace views {
 
 // static
-std::unique_ptr<NativeViewAccessibility> NativeViewAccessibility::Create(
-    View* view) {
-  return base::MakeUnique<NativeViewAccessibilityWin>(view);
+NativeViewAccessibility* NativeViewAccessibility::Create(View* view) {
+  return new NativeViewAccessibilityWin(view);
 }
 
 NativeViewAccessibilityWin::NativeViewAccessibilityWin(View* view)