views: Add OnEnabledChanged() method to View class.

views/controls/native_control_win.cc

Index: views/controls/native_control_win.cc
diff --git a/views/controls/native_control_win.cc b/views/controls/native_control_win.cc
index cd1ac0b19ad758be355247613c261256d95ce1e5..635576bbef4ab148abde3bc888c9d0d882976c41 100644
--- a/views/controls/native_control_win.cc
+++ b/views/controls/native_control_win.cc
@@ -58,12 +58,10 @@ bool NativeControlWin::ProcessMessage(UINT message,
 ////////////////////////////////////////////////////////////////////////////////
 // NativeControlWin, View overrides:
 
-void NativeControlWin::SetEnabled(bool enabled) {
-  if (IsEnabled() != enabled) {
-    View::SetEnabled(enabled);
-    if (native_view())
-      EnableWindow(native_view(), IsEnabled());
-  }
+void NativeControlWin::OnEnabledChanged() {
+  View::OnEnabledChanged();
+  if (native_view())
+    EnableWindow(native_view(), View::IsEnabled());
 }
 
 void NativeControlWin::ViewHierarchyChanged(bool is_add, View* parent,