Oilpan: Fix crash in content::WebIDBCursorImpl::~WebIDBCursorImpl.

Source/modules/indexeddb/IDBAny.cpp

 /*
  * Copyright (C) 2010 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 42 matching lines @@
     : m_type(type)
     , m_integer(0)
 {
     ASSERT(type == UndefinedType || type == NullType);
 }
 
 IDBAny::~IDBAny()
 {
 }
 
+void IDBAny::contextWillBeDestroyed()
+{
+    if (m_idbCursor)
+        m_idbCursor->contextWillBeDestroyed();
+}
+
 DOMStringList* IDBAny::domStringList() const
 {
     ASSERT(m_type == DOMStringListType);
     return m_domStringList.get();
 }
 
 IDBCursor* IDBAny::idbCursor() const
 {
     ASSERT(m_type == IDBCursorType);
     ASSERT_WITH_SECURITY_IMPLICATION(m_idbCursor->isKeyCursor());
@@ skipping 140 matching lines @@
 {
 }
 
 IDBAny::IDBAny(int64_t value)
     : m_type(IntegerType)
     , m_integer(value)
 {
 }
 
 } // namespace WebCore