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

ui/message_center/views/bounded_label.cc

 // 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.
 
 #include "ui/message_center/views/bounded_label.h"
 
 #include <limits>
 
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 301 matching lines @@
 
 gfx::Size BoundedLabel::GetSizeForWidthAndLines(int width, int lines) {
   return visible() ?
          label_->GetSizeForWidthAndLines(width, lines) : gfx::Size();
 }
 
 int BoundedLabel::GetBaseline() const {
   return label_->GetBaseline();
 }
 
-gfx::Size BoundedLabel::GetPreferredSize() {
+gfx::Size BoundedLabel::GetPreferredSize() const {
   return visible() ? label_->GetSizeForWidthAndLines(-1, -1) : gfx::Size();
 }
 
-int BoundedLabel::GetHeightForWidth(int width) {
+int BoundedLabel::GetHeightForWidth(int width) const {
   return visible() ?
          label_->GetSizeForWidthAndLines(width, line_limit_).height() : 0;
 }
 
 void BoundedLabel::Paint(gfx::Canvas* canvas, const views::CullSet& cull_set) {
   if (visible())
     label_->Paint(canvas, cull_set);
 }
 
 bool BoundedLabel::HitTestRect(const gfx::Rect& rect) const {
@@ skipping 11 matching lines @@
 
 void BoundedLabel::OnNativeThemeChanged(const ui::NativeTheme* theme) {
   label_->SetNativeTheme(theme);
 }
 
 base::string16 BoundedLabel::GetWrappedTextForTest(int width, int lines) {
   return JoinString(label_->GetWrappedText(width, lines), '\n');
 }
 
 }  // namespace message_center