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

chrome/browser/extensions/extension_infobar_delegate.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/extensions/extension_infobar_delegate.h"
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_view_host.h"
 #include "chrome/browser/extensions/extension_view_host_factory.h"
 #include "chrome/browser/infobars/infobar_service.h"
@@ skipping 79 matching lines @@
 infobars::InfoBarDelegate::Type ExtensionInfoBarDelegate::GetInfoBarType()
     const {
   return PAGE_ACTION_TYPE;
 }
 
 ExtensionInfoBarDelegate*
     ExtensionInfoBarDelegate::AsExtensionInfoBarDelegate() {
   return this;
 }
 
+const ExtensionInfoBarDelegate*
+    ExtensionInfoBarDelegate::AsExtensionInfoBarDelegate() const {
+  return this;
+}
+
 void ExtensionInfoBarDelegate::OnExtensionUnloaded(
     content::BrowserContext* browser_context,
     const extensions::Extension* extension,
     extensions::UnloadedExtensionInfo::Reason reason) {
   if (extension_ == extension)
     infobar()->RemoveSelf();
 }
 
 void ExtensionInfoBarDelegate::Observe(
     int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   DCHECK_EQ(type, chrome::NOTIFICATION_EXTENSION_HOST_VIEW_SHOULD_CLOSE);
   if (extension_view_host_.get() ==
       content::Details<extensions::ExtensionHost>(details).ptr())
     infobar()->RemoveSelf();
 }