Change InfoBar-related notifications to be sourced from a TabContentsWrapper, not a TabContents. ...

chrome/browser/ui/views/infobars/translate_infobar_base.cc

 // Copyright (c) 2011 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/infobars/translate_infobar_base.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/translate/translate_infobar_delegate.h"
 #include "chrome/browser/ui/views/infobars/after_translate_infobar.h"
 #include "chrome/browser/ui/views/infobars/before_translate_infobar.h"
@@ skipping 61 matching lines @@
   }
 
   // This must happen after adding all other children so InfoBarView can ensure
   // the close button is the last child.
   InfoBarView::ViewHierarchyChanged(is_add, parent, child);
 }
 
 void TranslateInfoBarBase::UpdateLanguageButtonText(
     views::MenuButton* button,
     LanguagesMenuModel::LanguageType language_type) {
+  DCHECK(button);
   TranslateInfoBarDelegate* delegate = GetDelegate();
   button->SetText(UTF16ToWideHack(delegate->GetLanguageDisplayableNameAt(
       (language_type == LanguagesMenuModel::ORIGINAL) ?
           delegate->original_language_index() :
           delegate->target_language_index())));
   // The button may have to grow to show the new text.
   Layout();
   SchedulePaint();
 }
 
@@ skipping 34 matching lines @@
 void TranslateInfoBarBase::FadeBackground(gfx::Canvas* canvas,
                                           double animation_value,
                                           const views::Background& background) {
   // Draw the background into an offscreen buffer with alpha value per animation
   // value, then blend it back into the current canvas.
   canvas->SaveLayerAlpha(static_cast<int>(animation_value * 255));
   canvas->AsCanvasSkia()->drawARGB(0, 255, 255, 255, SkXfermode::kClear_Mode);
   background.Paint(canvas, this);
   canvas->Restore();
 }