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

chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.cc

 // Copyright 2013 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/frame/opaque_browser_frame_view_layout.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/profiles/profiles_state.h"
 #include "chrome/browser/ui/views/profiles/avatar_label.h"
 #include "chrome/browser/ui/views/profiles/avatar_menu_button.h"
@@ skipping 657 matching lines @@
 
   if (delegate_->IsRegularOrGuestSession() && switches::IsNewAvatarMenu())
     LayoutNewStyleAvatar(host);
   else
     LayoutAvatar(host);
 
   client_view_bounds_ = CalculateClientAreaBounds(
       host->width(), host->height());
 }
 
-gfx::Size OpaqueBrowserFrameViewLayout::GetPreferredSize(views::View* host) {
+gfx::Size OpaqueBrowserFrameViewLayout::GetPreferredSize(
+    const views::View* host) const {
   // This is never used; NonClientView::GetPreferredSize() will be called
   // instead.
   NOTREACHED();
   return gfx::Size();
 }
 
 void OpaqueBrowserFrameViewLayout::ViewAdded(views::View* host,
                                              views::View* view) {
   SetView(view->id(), view);
 }
 
 void OpaqueBrowserFrameViewLayout::ViewRemoved(views::View* host,
                                                views::View* view) {
   SetView(view->id(), NULL);
 }