views: Also const-ify GetMaximumSize().

ui/views/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.
 
 #define _USE_MATH_DEFINES // For VC++ to get M_PI. This has to be first.
 
 #include "ui/views/view.h"
 
 #include <algorithm>
 #include <cmath>
@@ skipping 426 matching lines @@
 void View::SizeToPreferredSize() {
   gfx::Size prefsize = GetPreferredSize();
   if ((prefsize.width() != width()) || (prefsize.height() != height()))
     SetBounds(x(), y(), prefsize.width(), prefsize.height());
 }
 
 gfx::Size View::GetMinimumSize() const {
   return GetPreferredSize();
 }
 
-gfx::Size View::GetMaximumSize() {
+gfx::Size View::GetMaximumSize() const {
   return gfx::Size();
 }
 
 int View::GetHeightForWidth(int w) const {
   if (layout_manager_.get())
     return layout_manager_->GetPreferredHeightForWidth(this, w);
   return GetPreferredSize().height();
 }
 
 void View::SetVisible(bool visible) {
@@ skipping 2077 matching lines @@
   // Message the RootView to do the drag and drop. That way if we're removed
   // the RootView can detect it and avoid calling us back.
   gfx::Point widget_location(event.location());
   ConvertPointToWidget(this, &widget_location);
   widget->RunShellDrag(this, data, widget_location, drag_operations, source);
   // WARNING: we may have been deleted.
   return true;
 }
 
 }  // namespace views