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

chrome/browser/ui/views/bookmarks/bookmark_bar_instructions_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/bookmarks/bookmark_bar_instructions_view.h"
 
 #include <algorithm>
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/defaults.h"
@@ skipping 30 matching lines @@
         l10n_util::GetStringUTF16(IDS_BOOKMARK_BAR_IMPORT_LINK));
     // We don't want the link to alter tab navigation.
     import_link_->SetFocusable(false);
     import_link_->set_listener(this);
     import_link_->set_context_menu_controller(this);
     import_link_->SetAutoColorReadabilityEnabled(false);
     AddChildView(import_link_);
   }
 }
 
-gfx::Size BookmarkBarInstructionsView::GetPreferredSize() {
+gfx::Size BookmarkBarInstructionsView::GetPreferredSize() const {
   int ascent = 0, descent = 0, height = 0, width = 0;
   for (int i = 0; i < child_count(); ++i) {
-    views::View* view = child_at(i);
+    const views::View* view = child_at(i);
     gfx::Size pref = view->GetPreferredSize();
     int baseline = view->GetBaseline();
     if (baseline != -1) {
       ascent = std::max(ascent, baseline);
       descent = std::max(descent, pref.height() - baseline);
     } else {
       height = std::max(pref.height(), height);
     }
     width += pref.width();
   }
@@ skipping 55 matching lines @@
   const ui::ThemeProvider* theme_provider = GetThemeProvider();
   if (!theme_provider)
     return;
   updated_colors_ = true;
   SkColor text_color =
       theme_provider->GetColor(ThemeProperties::COLOR_BOOKMARK_TEXT);
   instructions_->SetEnabledColor(text_color);
   if (import_link_)
     import_link_->SetEnabledColor(text_color);
 }