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

ui/views/window/client_view.cc

 // Copyright (c) 2012 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/views/window/client_view.h"
 
 #include "base/logging.h"
 #include "ui/accessibility/ax_view_state.h"
 #include "ui/base/hit_test.h"
 #include "ui/views/widget/widget.h"
@@ skipping 27 matching lines @@
 bool ClientView::CanClose() {
   return true;
 }
 
 void ClientView::WidgetClosing() {
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // ClientView, View overrides:
 
-gfx::Size ClientView::GetPreferredSize() {
+gfx::Size ClientView::GetPreferredSize() const {
   // |contents_view_| is allowed to be NULL up until the point where this view
   // is attached to a Container.
   return contents_view_ ? contents_view_->GetPreferredSize() : gfx::Size();
 }
 
 gfx::Size ClientView::GetMaximumSize() {
   // |contents_view_| is allowed to be NULL up until the point where this view
   // is attached to a Container.
   return contents_view_ ? contents_view_->GetMaximumSize() : gfx::Size();
 }
 
-gfx::Size ClientView::GetMinimumSize() {
+gfx::Size ClientView::GetMinimumSize() const {
   // |contents_view_| is allowed to be NULL up until the point where this view
   // is attached to a Container.
   return contents_view_ ? contents_view_->GetMinimumSize() : gfx::Size();
 }
 
 void ClientView::Layout() {
   // |contents_view_| is allowed to be NULL up until the point where this view
   // is attached to a Container.
   if (contents_view_)
     contents_view_->SetBounds(0, 0, width(), height());
@@ skipping 18 matching lines @@
   if (details.is_add && details.child == this) {
     DCHECK(GetWidget());
     DCHECK(contents_view_); // |contents_view_| must be valid now!
     // Insert |contents_view_| at index 0 so it is first in the focus chain.
     // (the OK/Cancel buttons are inserted before contents_view_)
     AddChildViewAt(contents_view_, 0);
   }
 }
 
 }  // namespace views