views: Add OnEnabledChanged() method to View class.

views/view.cc

Index: views/view.cc
diff --git a/views/view.cc b/views/view.cc
index cfae12610f2a849c109ae9c97d14c8a2f1a0c1c0..927f9d2f45dc5ac3d15151934dcbbaf60672e4af 100644
--- a/views/view.cc
+++ b/views/view.cc
@@ -381,10 +381,10 @@ bool View::IsVisibleInRootView() const {
   return IsVisible() && parent() ? parent()->IsVisibleInRootView() : false;
 }
 
-void View::SetEnabled(bool state) {
-  if (enabled_ != state) {
-    enabled_ = state;
-    SchedulePaint();
+void View::SetEnabled(bool enabled) {
+  if (enabled_ != enabled) {
+    enabled_ = enabled;
+    OnEnabledChanged();
   }
 }
 
@@ -392,6 +392,10 @@ bool View::IsEnabled() const {
   return enabled_;
 }
 
+void View::OnEnabledChanged() {
+  SchedulePaint();
+}
+
 // Transformations -------------------------------------------------------------
 
 const ui::Transform& View::GetTransform() const {