views: Also const-ify GetMaximumSize().

chrome/browser/ui/views/panels/panel_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 "chrome/browser/ui/views/panels/panel_view.h"
 
 #include <map>
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 892 matching lines @@
 }
 
 gfx::Size PanelView::GetMinimumSize() const {
   // If the panel is minimized, it can be rendered to very small size, like
   // 4-pixel lines when it is docked. Otherwise, its size should not be less
   // than its minimum size.
   return panel_->IsMinimized() ? gfx::Size() :
       gfx::Size(panel::kPanelMinWidth, panel::kPanelMinHeight);
 }
 
-gfx::Size PanelView::GetMaximumSize() {
+gfx::Size PanelView::GetMaximumSize() const {
   // If the user is resizing a stacked panel by its bottom edge, make sure its
   // height cannot grow more than what the panel below it could offer. This is
   // because growing a stacked panel by y amount will shrink the panel below it
   // by same amount and we do not want the panel below it being shrunk to be
   // smaller than the titlebar.
 #if defined(OS_WIN)
   if (panel_->stack() && user_resizing_interior_stacked_panel_edge_) {
     Panel* below_panel = panel_->stack()->GetPanelBelow(panel_.get());
     if (below_panel && !below_panel->IsMinimized()) {
       return gfx::Size(0, below_panel->GetBounds().bottom() -
@@ skipping 201 matching lines @@
   // SWP_FRAMECHANGED flag must be called in order for the cached window data
   // to be updated properly.
   // http://msdn.microsoft.com/en-us/library/windows/desktop/ms633591(v=vs.85).aspx
   if (update_frame) {
     ::SetWindowPos(native_window, NULL, 0, 0, 0, 0,
                    SWP_FRAMECHANGED | SWP_NOMOVE | SWP_NOSIZE |
                        SWP_NOZORDER | SWP_NOACTIVATE);
   }
 }
 #endif