temporary fix for requestAutocomplete crash

chrome/browser/ui/autofill/autofill_dialog_controller_impl.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/ui/autofill/autofill_dialog_controller_impl.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/string_split.h"
@@ skipping 372 matching lines @@
   return label;
 }
 
 gfx::Image AutofillDialogControllerImpl::SuggestionIconForSection(
     DialogSection section) {
   if (section != SECTION_CC)
     return gfx::Image();
 
   std::string item_key =
       suggested_cc_.GetItemKeyAt(suggested_cc_.checked_item());
+  if (item_key.empty())
+    return gfx::Image();
   ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
   CreditCard* card = GetManager()->GetCreditCardByGUID(item_key);
   return rb.GetImageNamed(card->IconResourceId());
 }
 
 void AutofillDialogControllerImpl::EditClickedForSection(
     DialogSection section) {
   SuggestionsMenuModel* model = SuggestionsMenuModelForSection(section);
   DetailInputs* inputs = MutableRequestedFieldsForSection(section);
 
@@ skipping 547 matching lines @@
     DialogSection section) {
   return const_cast<DetailInputs*>(&RequestedFieldsForSection(section));
 }
 
 void AutofillDialogControllerImpl::HidePopup() {
   if (popup_controller_)
     popup_controller_->Hide();
 }
 
 }  // namespace autofill