Remove worker support of Web SQL Database.

Source/modules/webdatabase/SQLStatementBackend.cpp

 /*
  * Copyright (C) 2007, 2013 Apple 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 127 matching lines @@
         else
             m_error = SQLErrorData::create(SQLError::SYNTAX_ERR, "could not prepare statement", result, database->lastErrorMsg());
         db->reportExecuteStatementResult(1, m_error->code(), result);
         return false;
     }
 
     // FIXME: If the statement uses the ?### syntax supported by sqlite, the bind parameter count is very likely off from the number of question marks.
     // If this is the case, they might be trying to do something fishy or malicious
     if (statement.bindParameterCount() != m_arguments.size()) {
         WTF_LOG(StorageAPI, "Bind parameter count doesn't match number of question marks");
-        m_error = SQLErrorData::create(db->isInterrupted() ? SQLError::DATABASE_ERR : SQLError::SYNTAX_ERR, "number of '?'s in statement string does not match argument count");
+        m_error = SQLErrorData::create(SQLError::SYNTAX_ERR, "number of '?'s in statement string does not match argument count");
         db->reportExecuteStatementResult(2, m_error->code(), 0);
         return false;
     }
 
     for (unsigned i = 0; i < m_arguments.size(); ++i) {
         result = statement.bindValue(i + 1, m_arguments[i]);
         if (result == SQLResultFull) {
             setFailureDueToQuota(db);
             return false;
         }
@@ skipping 73 matching lines @@
     if (lastExecutionFailedDueToQuota())
         m_error = nullptr;
 }
 
 bool SQLStatementBackend::lastExecutionFailedDueToQuota() const
 {
     return m_error && m_error->code() == SQLError::QUOTA_ERR;
 }
 
 } // namespace blink