Merge NativeTextfieldViews into views::Textfield.

ui/views/examples/multiline_example.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/examples/multiline_example.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/events/event.h"
 #include "ui/gfx/render_text.h"
 #include "ui/views/background.h"
@@ skipping 138 matching lines @@
   container()->SchedulePaint();
 }
 
 bool MultilineExample::HandleKeyEvent(Textfield* sender,
                                       const ui::KeyEvent& key_event) {
   return false;
 }
 
 void MultilineExample::ButtonPressed(Button* sender, const ui::Event& event) {
   DCHECK_EQ(sender, label_checkbox_);
-  label_->SetText(label_checkbox_->checked() ? textfield_->text() :
+  label_->SetText(label_checkbox_->checked() ? textfield_->GetText() :
                                                base::string16());
   container()->Layout();
   container()->SchedulePaint();
 }
 
 }  // namespace examples
 }  // namespace views