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

chrome/browser/ui/views/toolbar/toolbar_button.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 "chrome/browser/ui/views/toolbar/toolbar_button.h"
 
 #include "base/bind.h"
 #include "chrome/browser/ui/views/location_bar/location_bar_view.h"
 #include "grit/theme_resources.h"
 #include "grit/ui_strings.h"
@@ skipping 28 matching lines @@
 }
 
 void ToolbarButton::ClearPendingMenu() {
   show_menu_factory_.InvalidateWeakPtrs();
 }
 
 bool ToolbarButton::IsMenuShowing() const {
   return menu_showing_;
 }
 
-gfx::Size ToolbarButton::GetPreferredSize() {
+gfx::Size ToolbarButton::GetPreferredSize() const {
   gfx::Size size(image()->GetPreferredSize());
   gfx::Size label_size = label()->GetPreferredSize();
   if (label_size.width() > 0)
     size.Enlarge(label_size.width() + LocationBarView::kItemPadding, 0);
   return size;
 }
 
 bool ToolbarButton::OnMousePressed(const ui::MouseEvent& event) {
   if (enabled() && ShouldShowMenu() &&
       IsTriggerableEvent(event) && HitTestPoint(event.location())) {
@@ skipping 166 matching lines @@
 
   // Need to explicitly clear mouse handler so that events get sent
   // properly after the menu finishes running. If we don't do this, then
   // the first click to other parts of the UI is eaten.
   SetMouseHandler(NULL);
 
   // Set the state back to normal after the drop down menu is closed.
   if (state_ != STATE_DISABLED)
     SetState(STATE_NORMAL);
 }