Don't include forms without fields in has_more_forms calculation.

components/autofill/renderer/form_cache.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 "components/autofill/renderer/form_cache.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "components/autofill/common/autofill_constants.h"
 #include "components/autofill/common/form_data.h"
@@ skipping 106 matching lines @@
               std::make_pair(input_element, input_element.isChecked()));
         } else {
           ++num_editable_elements;
         }
       }
     }
 
     // To avoid overly expensive computation, we impose a minimum number of
     // allowable fields.  The corresponding maximum number of allowable fields
     // is imposed by WebFormElementToFormData().
-    if (num_editable_elements < minimum_required_fields) {
+    if (num_editable_elements < minimum_required_fields &&
+        control_elements.size() > 0) {
       has_skipped_forms = true;
       continue;
     }
 
     FormData form;
     ExtractMask extract_mask =
       static_cast<ExtractMask>(EXTRACT_VALUE | EXTRACT_OPTIONS);
 
     if (!WebFormElementToFormData(form_element, WebFormControlElement(),
                                   REQUIRE_NONE, extract_mask, &form, NULL)) {
@@ skipping 149 matching lines @@
         UTF8ToUTF16(form.experiment_id));
     if (!element->hasAttribute("placeholder"))
       element->setAttribute("placeholder", WebString(UTF8ToUTF16(placeholder)));
     element->setAttribute("title", WebString(title));
   }
 
   return true;
 }
 
 }  // namespace autofill