views: Moves TextfieldController/TextRange into their own headers.

views/examples/textfield_example.cc

 // Copyright (c) 2011 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 "views/examples/textfield_example.h"
 
 #include "base/utf_string_conversions.h"
 #include "views/controls/label.h"
+#include "views/controls/textfield/textfield.h"
 #include "views/layout/grid_layout.h"
 #include "views/view.h"
 
 namespace examples {
 
 TextfieldExample::TextfieldExample(ExamplesMain* main)
     : ExampleBase(main) {
 }
 
 TextfieldExample::~TextfieldExample() {
@@ skipping 56 matching lines @@
   } else if (sender == clear_all_) {
     string16 empty;
     name_->SetText(empty);
     password_->SetText(empty);
   } else if (sender == append_) {
     name_->AppendText(WideToUTF16(L"[append]"));
   }
 }
 
 }  // namespace examples