Remove a lot of no-longer-used functionality from DecoratedTextfield.

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

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_AUTOFILL_DECORATED_TEXTFIELD_H_
 #define CHROME_BROWSER_UI_VIEWS_AUTOFILL_DECORATED_TEXTFIELD_H_
 
 #include <memory>
 
 #include "base/macros.h"
 #include "base/strings/string16.h"
-#include "ui/gfx/image/image.h"
 #include "ui/views/controls/textfield/textfield.h"
-#include "ui/views/view_targeter_delegate.h"
 
 namespace views {
-class ImageView;
 class TextfieldController;
 }
 
 namespace autofill {
 
 // A class which holds a textfield and draws extra stuff on top, like
 // invalid content indications.
-class DecoratedTextfield : public views::Textfield,
-                           public views::ViewTargeterDelegate {
+// TODO(estade): the usefulness of this class is dubious now that it's been
+// stripped of most of its functionality.
+class DecoratedTextfield : public views::Textfield {
  public:
   static const char kViewClassName[];
 
   DecoratedTextfield(const base::string16& default_value,
                      const base::string16& placeholder,
                      views::TextfieldController* controller);
   ~DecoratedTextfield() override;
 
   // Sets whether to indicate the textfield has invalid content.
   void SetInvalid(bool invalid);
   bool invalid() const { return invalid_; }
 
-  // See docs for |editable_|.
-  void SetEditable(bool editable);
-  bool editable() const { return editable_; }
-
-  // Sets the icon to display inside the textfield at the end of the text.
-  void SetIcon(const gfx::Image& icon);
-
-  // Sets a tooltip for this field. This will override the icon set with
-  // SetIcon(), if any, and will be overridden by future calls to SetIcon().
-  void SetTooltipIcon(const base::string16& text);
-
-  // views::Textfield implementation.
-  base::string16 GetPlaceholderText() const override;
-
   // views::View implementation.
   const char* GetClassName() const override;
-  gfx::Size GetPreferredSize() const override;
-  void Layout() override;
 
  private:
-  // views::ViewTargeterDelegate:
-  views::View* TargetForRect(views::View* root, const gfx::Rect& rect) override;
-
-  // Updates the background after its color may have changed.
-  void UpdateBackground();
-
   // Updates the border after its color or insets may have changed.
   void UpdateBorder();
 
-  // Called to update the layout after SetIcon or SetTooltipIcon was called.
-  void IconChanged();
-
-  // The view that holds the icon at the end of the textfield.
-  std::unique_ptr<views::ImageView> icon_view_;
-
   // Whether the text contents are "invalid" (i.e. should special markers be
   // shown to indicate invalidness).
   bool invalid_;
 
-  // Whether the user can edit the field. When not editable, many of the
-  // pieces of the textfield disappear (border, background, icon, placeholder
-  // text) and it can't receive focus.
-  bool editable_;
-
   DISALLOW_COPY_AND_ASSIGN(DecoratedTextfield);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_VIEWS_AUTOFILL_DECORATED_TEXTFIELD_H_