Reduce allocation size of FormData::m_entries.

Source/web/WebSearchableFormData.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 198 matching lines @@
         HTMLFormControlElement& control = toHTMLFormControlElement(*item);
         if (control.isDisabledFormControl() || control.name().isNull())
             continue;
 
         FormData* formData = FormData::create(encoding);
         control.appendToFormData(*formData, false);
 
         for (const auto& entry : formData->entries()) {
             if (!encodedString->isEmpty())
                 encodedString->append('&');
-            FormDataEncoder::encodeStringAsFormData(*encodedString, entry.key());
+            FormDataEncoder::encodeStringAsFormData(*encodedString, entry->key());
             encodedString->append('=');
             if (&control == textElement) {
                 encodedString->append("{searchTerms}", 13);
                 isElementFound = true;
             } else {
-                FormDataEncoder::encodeStringAsFormData(*encodedString, entry.data());
+                FormDataEncoder::encodeStringAsFormData(*encodedString, entry->data());
             }
         }
     }
     return isElementFound;
 }
 
 } // namespace
 
 WebSearchableFormData::WebSearchableFormData(const WebFormElement& form, const WebInputElement& selectedInputElement)
 {
@@ skipping 45 matching lines @@
 
     String action(formElement->action());
     KURL url(formElement->document().completeURL(action.isNull() ? "" : action));
     RefPtr<EncodedFormData> formData = EncodedFormData::create(encodedString);
     url.setQuery(formData->flattenToString());
     m_url = url;
     m_encoding = String(encoding.name());
 }
 
 } // namespace blink