Translate (Mac): add after infobar UI for server side language detection

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

 // 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.
 
 #import "chrome/browser/ui/cocoa/infobars/translate_infobar_base.h"
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/translate/translate_infobar_delegate.h"
@@ skipping 251 matching lines @@
                 i != [self delegate]->target_language_index(),
                 i == [self delegate]->original_language_index());
     AddMenuItem(targetLanguageMenu,
                 self,
                 @selector(languageMenuChanged:),
                 title,
                 IDC_TRANSLATE_TARGET_LANGUAGE_BASE + i,
                 i != [self delegate]->original_language_index(),
                 i == [self delegate]->target_language_index());
   }
-  [fromLanguagePopUp_
-      selectItemAtIndex:([self delegate]->original_language_index())];
+  if ([self delegate]->original_language_index() !=
+      TranslateInfoBarDelegate::kNoIndex) {
+    [fromLanguagePopUp_
+        selectItemAtIndex:([self delegate]->original_language_index())];
+  }
   [toLanguagePopUp_
       selectItemAtIndex:([self delegate]->target_language_index())];
 }
 
 - (void)addAdditionalControls {
   using l10n_util::GetNSString;
   using l10n_util::GetNSStringWithFixup;
 
   // Get layout information from the NIB.
   NSRect okButtonFrame = [okButton_ frame];
@@ skipping 256 matching lines @@
           [[control description] UTF8String] <<[title UTF8String];
       return false;
     }
     previousControl = control;
   }
 
   return true;
 }
 
 @end // TranslateInfoBarControllerBase (TestingAPI)