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

components/infobars/core/infobar_container.cc

 // Copyright 2014 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 "components/infobars/core/infobar_container.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "build/build_config.h"
@@ skipping 40 matching lines @@
       // As when we removed the infobars above, we prevent callbacks to
       // OnInfoBarStateChanged() for each infobar.
       AddInfoBar(infobar_manager_->infobar_at(i), i, false, NO_CALLBACK);
     }
   }
 
   // Now that everything is up to date, signal the delegate to re-layout.
   OnInfoBarStateChanged(false);
 }
 
-int InfoBarContainer::GetVerticalOverlap(int* total_height) {
+int InfoBarContainer::GetVerticalOverlap(int* total_height) const {
   // Our |total_height| is the sum of the preferred heights of the InfoBars
   // contained within us plus the |vertical_overlap|.
   int vertical_overlap = 0;
   int next_infobar_y = 0;
 
-  for (InfoBars::iterator i(infobars_.begin()); i != infobars_.end(); ++i) {
+  for (InfoBars::const_iterator i(infobars_.begin()); i != infobars_.end();
+       ++i) {
     InfoBar* infobar = *i;
     next_infobar_y -= infobar->arrow_height();
     vertical_overlap = std::max(vertical_overlap, -next_infobar_y);
     next_infobar_y += infobar->total_height();
   }
 
   if (total_height)
     *total_height = next_infobar_y + vertical_overlap;
   return vertical_overlap;
 }
@@ skipping 91 matching lines @@
     return InfoBar::kDefaultArrowTargetHeight;
   // When the first infobar is animating closed, we animate the second infobar's
   // arrow target height from the default to the top target height.  Note that
   // the animation values here are going from 1.0 -> 0.0 as the top bar closes.
   return top_arrow_target_height_ + static_cast<int>(
       (InfoBar::kDefaultArrowTargetHeight - top_arrow_target_height_) *
           first_infobar_animation.GetCurrentValue());
 }
 
 }  // namespace infobars