views: Make view::Views::GetPreferredSize() const.

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 "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "ui/gfx/image/image.h"
@@ skipping 30 matching lines @@
 
   // 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.
   virtual base::string16 GetPlaceholderText() const OVERRIDE;
 
   // views::View implementation.
   virtual const char* GetClassName() const OVERRIDE;
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
+  virtual gfx::Size GetPreferredSize() const OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual views::View* GetEventHandlerForRect(const gfx::Rect& rect) OVERRIDE;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(DecoratedTextfieldTest, HeightMatchesButton);
 
   // Updates the background after its color may have changed.
   void UpdateBackground();
 
   // Updates the border after its color or insets may have changed.
@@ skipping 13 matching lines @@
   // 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_