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

chrome/browser/ui/views/infobars/translate_message_infobar.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 "chrome/browser/ui/views/infobars/translate_message_infobar.h"
 
 #include "chrome/browser/translate/translate_infobar_delegate.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/controls/label.h"
 
@@ skipping 43 matching lines @@
 void TranslateMessageInfoBar::ButtonPressed(views::Button* sender,
                                             const ui::Event& event) {
   if (!owner())
     return;  // We're closing; don't call anything, it might access the owner.
   if (sender == button_)
     GetDelegate()->MessageInfoBarButtonPressed();
   else
     TranslateInfoBarBase::ButtonPressed(sender, event);
 }
 
-int TranslateMessageInfoBar::ContentMinimumWidth() {
+int TranslateMessageInfoBar::ContentMinimumWidth() const {
   return label_->GetMinimumSize().width() + NonLabelWidth();
 }
 
 int TranslateMessageInfoBar::NonLabelWidth() const {
   if (!button_)
     return 0;
   return button_->width() + (label_->text().empty() ? 0 : kEndOfLabelSpacing);
 }