Remove unused class ExpandingTextfield

chrome/browser/ui/views/autofill/expanding_textfield.h

-// Copyright 2014 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.
-
-#ifndef CHROME_BROWSER_UI_VIEWS_AUTOFILL_EXPANDING_TEXTFIELD_H_
-#define CHROME_BROWSER_UI_VIEWS_AUTOFILL_EXPANDING_TEXTFIELD_H_
-
-#include <list>
-
-#include "base/macros.h"
-#include "base/strings/string16.h"
-#include "chrome/browser/ui/views/autofill/decorated_textfield.h"
-#include "ui/views/controls/textfield/textfield_controller.h"
-#include "ui/views/view.h"
-
-namespace gfx {
-class Image;
-}
-
-namespace autofill {
-
-// A view that houses a stack of textfields. The stack grows as needed.
-class ExpandingTextfield : public views::View,
-                           public views::TextfieldController {
- public:
-  static const char kViewClassName[];
-
-  // When |multiline| is false, the view acts pretty much like a normal
-  // DecoratedTextfield.
-  ExpandingTextfield(const base::string16& default_value,
-                     const base::string16& placeholder,
-                     bool multiline,
-                     views::TextfieldController* controller);
-  ~ExpandingTextfield() override;
-
-  // Sets the contents of the textfields. Textfield n is set to the nth line
-  // of |text|, as separated by line returns.
-  void SetText(const base::string16& text);
-  // Concatenates text contents of all textfields (with line returns as the
-  // joining character) and returns it.
-  base::string16 GetText();
-
-  // Sets whether to indicate the first textfield has invalid content. Latter
-  // textfields are always valid.
-  void SetInvalid(bool invalid);
-  bool invalid() {
-    return textfields_.front()->invalid();
-  }
-
-  // Like validity, this only cares about the first textfield.
-  void SetEditable(bool editable);
-  bool editable() {
-    return textfields_.front()->editable();
-  }
-
-  // DecoratedTextfield pass-throughs.
-  void SetDefaultWidthInCharacters(int chars);
-  void SetPlaceholderText(const base::string16& placeholder);
-  void SetIcon(const gfx::Image& icon);
-  void SetTooltipIcon(const base::string16& text);
-
-  // View implementation.
-  const char* GetClassName() const override;
-  using views::View::needs_layout;
-
-  // TextfieldController implementation.
-  void ContentsChanged(views::Textfield* sender,
-                       const base::string16& new_contents) override;
-  bool HandleKeyEvent(views::Textfield* sender,
-                      const ui::KeyEvent& key_event) override;
-  bool HandleMouseEvent(views::Textfield* sender,
-                        const ui::MouseEvent& mouse_event) override;
-
- private:
-  // Calls a given function on every textfield.
-  template <typename BaseType, typename Param>
-  void ForEachTextfield(void (BaseType::* f)(Param), Param p) const;
-
-  // The list of textfields. Owned as child views.
-  std::list<DecoratedTextfield*> textfields_;
-
-  TextfieldController* controller_;
-
-  DISALLOW_COPY_AND_ASSIGN(ExpandingTextfield);
-};
-
-}  // namespace autofill
-
-#endif  // CHROME_BROWSER_UI_VIEWS_AUTOFILL_EXPANDING_TEXTFIELD_H_