views: Moves TextfieldController/TextRange into their own headers.

views/controls/textfield/textfield_views_model.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/controls/textfield/textfield_views_model.h"
 
 #include <algorithm>
 
 #include "base/i18n/break_iterator.h"
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/clipboard/scoped_clipboard_writer.h"
 #include "ui/gfx/font.h"
+#include "views/controls/textfield/text_range.h"
+#include "views/controls/textfield/textfield.h"
 #include "views/views_delegate.h"
-#include "views/controls/textfield/textfield.h"
 
 namespace views {
 
 TextfieldViewsModel::TextfieldViewsModel()
     : cursor_pos_(0),
       selection_begin_(0),
       is_password_(false) {
 }
 
 TextfieldViewsModel::~TextfieldViewsModel() {
@@ skipping 306 matching lines @@
 }
 
 size_t TextfieldViewsModel::GetSafePosition(size_t position) const {
   if (position > text_.length()) {
     return text_.length();
   }
   return position;
 }
 
 }  // namespace views