Oilpan: keep FormData on the heap by default.

Source/core/html/FormDataList.cpp

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 10 matching lines @@
 #include "config.h"
 #include "core/html/FormDataList.h"
 
 #include "core/fileapi/File.h"
 #include "platform/network/FormDataBuilder.h"
 #include "platform/text/LineEnding.h"
 #include "wtf/CurrentTime.h"
 
 namespace blink {
 
-DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(FormDataList);
-
 FormDataList::FormDataList(const WTF::TextEncoding& c)
     : m_encoding(c)
 {
 }
 
 void FormDataList::appendString(const String& string)
 {
     m_items.append(encodeAndNormalize(string));
 }
 
@@ skipping 44 matching lines @@
     const FormDataListItems& items = this->items();
     size_t formDataListSize = items.size();
     ASSERT(!(formDataListSize % 2));
     if (index >= formDataListSize / 2)
         return Entry();
     const FormDataList::Item& key = items[index * 2];
     const FormDataList::Item& value = items[index * 2 + 1];
     return itemsToEntry(key, value);
 }
 
-WillBeHeapVector<FormDataList::Entry> FormDataList::getAll(const String& key) const
+HeapVector<FormDataList::Entry> FormDataList::getAll(const String& key) const
 {
-    WillBeHeapVector<FormDataList::Entry> matches;
+    HeapVector<FormDataList::Entry> matches;
 
     const CString keyData = encodeAndNormalize(key);
     const FormDataListItems& items = this->items();
     size_t formDataListSize = items.size();
     ASSERT(!(formDataListSize % 2));
     for (size_t i = 0; i < formDataListSize; i += 2) {
         const FormDataList::Item& key = items[i];
         if (key.data() != keyData)
             continue;
         const FormDataList::Item& value = items[i + 1];
@@ skipping 188 matching lines @@
 {
     visitor->trace(m_file);
 }
 
 DEFINE_TRACE(FormDataList::Item)
 {
     visitor->trace(m_blob);
 }
 
 } // namespace blink