Remove the distinction between informational and warning infobar

ios/chrome/browser/translate/after_translate_infobar_controller.mm

 // 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 "ios/chrome/browser/translate/after_translate_infobar_controller.h"
 
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/translate/core/browser/translate_infobar_delegate.h"
 #include "grit/components_strings.h"
@@ skipping 16 matching lines @@
 
 @implementation AfterTranslateInfoBarController
 
 #pragma mark -
 #pragma mark InfoBarControllerProtocol
 
 - (void)layoutForDelegate:(infobars::InfoBarDelegate*)delegate
                     frame:(CGRect)frame {
   _translateInfoBarDelegate = delegate->AsTranslateInfoBarDelegate();
   DCHECK(_translateInfoBarDelegate);
-  infobars::InfoBarDelegate* infoBarDelegate =
-      static_cast<infobars::InfoBarDelegate*>(_translateInfoBarDelegate);
   DCHECK(!infoBarView_);
   infoBarView_.reset([ios::GetChromeBrowserProvider()->CreateInfoBarView()
       initWithFrame:frame
-           delegate:delegate_
-          isWarning:infoBarDelegate->GetInfoBarType() ==
-                    infobars::InfoBarDelegate::WARNING_TYPE]);
+           delegate:delegate_]);
   // Icon
   gfx::Image icon = _translateInfoBarDelegate->GetIcon();
   if (!icon.IsEmpty())
     [infoBarView_ addLeftIcon:icon.ToUIImage()];
   // Main text.
   const bool autodeterminedSourceLanguage =
       _translateInfoBarDelegate->original_language_index() ==
       translate::TranslateInfoBarDelegate::kNoIndex;
   bool swappedLanguageButtons;
   std::vector<base::string16> strings;
@@ skipping 65 matching lines @@
 }
 
 - (void)infoBarSwitchDidPress:(id)sender {
   DCHECK_EQ(TranslateInfoBarIOSTag::ALWAYS_TRANSLATE_SWITCH, [sender tag]);
   DCHECK([sender respondsToSelector:@selector(isOn)]);
   if (_translateInfoBarDelegate->ShouldAlwaysTranslate() != [sender isOn])
     _translateInfoBarDelegate->ToggleAlwaysTranslate();
 }
 
 @end