Introduce InfoBarTabService API.

chrome/browser/ui/cocoa/infobars/translate_infobar_base.mm

Index: chrome/browser/ui/cocoa/infobars/translate_infobar_base.mm
diff --git a/chrome/browser/ui/cocoa/infobars/translate_infobar_base.mm b/chrome/browser/ui/cocoa/infobars/translate_infobar_base.mm
index e13e4daf63849372b9653e27f8b7f098f32ce710..bc038343750f4d2a153a57644565f8c121a3ab2e 100644
--- a/chrome/browser/ui/cocoa/infobars/translate_infobar_base.mm
+++ b/chrome/browser/ui/cocoa/infobars/translate_infobar_base.mm
@@ -29,24 +29,25 @@ using InfoBarUtilities::CreateLabel;
 using InfoBarUtilities::AddMenuItem;
 
 // TranslateInfoBarDelegate views specific method:
-InfoBar* TranslateInfoBarDelegate::CreateInfoBar(InfoBarTabHelper* owner) {
+InfoBar* TranslateInfoBarDelegate::CreateInfoBar(InfoBarTabService* owner) {
+  InfoBarTabHelper* helper = (InfoBarTabHelper*)owner;
   TranslateInfoBarControllerBase* infobar_controller = NULL;
   switch (type_) {
     case BEFORE_TRANSLATE:
       infobar_controller =
           [[BeforeTranslateInfobarController alloc] initWithDelegate:this
-                                                               owner:owner];
+                                                               owner:helper];
       break;
     case AFTER_TRANSLATE:
       infobar_controller =
           [[AfterTranslateInfobarController alloc] initWithDelegate:this
-                                                              owner:owner];
+                                                              owner:helper];
       break;
     case TRANSLATING:
     case TRANSLATION_ERROR:
       infobar_controller =
           [[TranslateMessageInfobarController alloc] initWithDelegate:this
-                                                                owner:owner];
+                                                                owner:helper];
       break;
     default:
       NOTREACHED();