Revert of Merge NativeTextfieldViews into views::Textfield.

ui/views/controls/textfield/textfield_controller.cc

Index: ui/views/controls/textfield/textfield_controller.cc
diff --git a/ui/views/controls/textfield/textfield_controller.cc b/ui/views/controls/textfield/textfield_controller.cc
index 1d90f3c06df26e2a424d6d7f855530ad542ea6ae..e82579653cbfbca48ad907d3ba41e9c4855b63c9 100644
--- a/ui/views/controls/textfield/textfield_controller.cc
+++ b/ui/views/controls/textfield/textfield_controller.cc
@@ -23,4 +23,20 @@
   return ui::DragDropTypes::DRAG_NONE;
 }
 
+bool TextfieldController::IsCommandIdEnabled(int command_id) const {
+  return false;
+}
+
+bool TextfieldController::IsItemForCommandIdDynamic(int command_id) const {
+  return false;
+}
+
+base::string16 TextfieldController::GetLabelForCommandId(int command_id) const {
+  return base::string16();
+}
+
+bool TextfieldController::HandlesCommand(int command_id) const {
+  return false;
+}
+
 }  // namespace views