Don't display drop down arrows in rAc dialog unless there is a suggestion

chrome/browser/ui/autofill/autofill_dialog_controller.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_DIALOG_CONTROLLER_H_
 #define CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_DIALOG_CONTROLLER_H_
 
 #include <vector>
 
 #include "base/string16.h"
@@ skipping 85 matching lines @@
   // |section|.
   virtual const DetailInputs& RequestedFieldsForSection(DialogSection section)
       const = 0;
 
   // Returns the combobox model for inputs of type |type|, or NULL if the input
   // should be a text field.
   virtual ui::ComboboxModel* ComboboxModelForAutofillType(
       AutofillFieldType type) = 0;
 
   // Returns the model for suggestions for fields that fall under |section|.
+  // This may return NULL, in which case no menu should be shown for that
+  // section.
   virtual ui::MenuModel* MenuModelForSection(DialogSection section) = 0;
 
+#if defined(OS_ANDROID)
+  // As the above, but will never return NULL. TODO(estade): android should
+  // stop relying on this and it should be removed.
+  virtual ui::MenuModel* MenuModelForSectionHack(DialogSection section) = 0;
+#endif
+
   // Returns the label text used to describe the section (i.e. Billing).
   virtual string16 LabelForSection(DialogSection section) const = 0;
 
   // Returns the current state of suggestions for |section|.
   virtual SuggestionState SuggestionStateForSection(DialogSection section) = 0;
 
   // Should be called when the user starts editing of the section.
   virtual void EditClickedForSection(DialogSection section) = 0;
 
   // Should be called when the user cancels editing of the section.
@@ skipping 65 matching lines @@
   // The web contents that prompted the dialog.
   virtual content::WebContents* web_contents() = 0;
 
  protected:
   virtual ~AutofillDialogController();
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_AUTOFILL_AUTOFILL_DIALOG_CONTROLLER_H_