Generate passwords only for forms that autofill server marks as account creation forms.

components/autofill/core/browser/autofill_manager_delegate.h

 // Copyright 2013 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 COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_MANAGER_DELEGATE_H_
 #define COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_MANAGER_DELEGATE_H_
 
 #include <vector>
 
 #include "base/callback_forward.h"
@@ skipping 77 matching lines @@
   // Update the data list values shown by the Autofill popup, if visible.
   virtual void UpdateAutofillPopupDataListValues(
       const std::vector<base::string16>& values,
       const std::vector<base::string16>& labels) = 0;
 
   // Hide the Autofill popup if one is currently showing.
   virtual void HideAutofillPopup() = 0;
 
   // Whether the Autocomplete feature of Autofill should be enabled.
   virtual bool IsAutocompleteEnabled() = 0;
+
+  // Pass the form structures to the password generation manager to detect
+  // account creation forms.
+  virtual void DetectAccountCreationForms(
+      const std::vector<autofill::FormStructure*>& forms) = 0;
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CORE_BROWSER_AUTOFILL_MANAGER_DELEGATE_H_