Revert of Add task location information to ExecutionContext

Source/modules/webdatabase/Database.cpp

 /*
  * Copyright (C) 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 822 matching lines @@
 #if ENABLE(ASSERT)
     SQLTransactionErrorCallback* originalErrorCallback = errorCallback;
 #endif
     SQLTransaction* transaction = SQLTransaction::create(this, callback, successCallback, errorCallback, readOnly);
     SQLTransactionBackend* transactionBackend = runTransaction(transaction, readOnly, changeVersionData);
     if (!transactionBackend) {
         SQLTransactionErrorCallback* callback = transaction->releaseErrorCallback();
         ASSERT(callback == originalErrorCallback);
         if (callback) {
             OwnPtr<SQLErrorData> error = SQLErrorData::create(SQLError::UNKNOWN_ERR, "database has been closed");
-            executionContext()->postTask(FROM_HERE, createSameThreadTask(&callTransactionErrorCallback, callback, error.release()));
+            executionContext()->postTask(createSameThreadTask(&callTransactionErrorCallback, callback, error.release()));
         }
     }
 }
 
 // This object is constructed in a database thread, and destructed in the
 // context thread.
 class DeliverPendingCallbackTask final : public ExecutionContextTask {
 public:
     static PassOwnPtr<DeliverPendingCallbackTask> create(SQLTransaction* transaction)
     {
         return adoptPtr(new DeliverPendingCallbackTask(transaction));
     }
 
     virtual void performTask(ExecutionContext*) override
     {
         m_transaction->performPendingCallback();
     }
 
 private:
     DeliverPendingCallbackTask(SQLTransaction* transaction)
         : m_transaction(transaction)
     {
     }
 
     CrossThreadPersistent<SQLTransaction> m_transaction;
 };
 
 void Database::scheduleTransactionCallback(SQLTransaction* transaction)
 {
-    executionContext()->postTask(FROM_HERE, DeliverPendingCallbackTask::create(transaction));
+    executionContext()->postTask(DeliverPendingCallbackTask::create(transaction));
 }
 
 Vector<String> Database::performGetTableNames()
 {
     disableAuthorizer();
 
     SQLiteStatement statement(sqliteDatabase(), "SELECT name FROM sqlite_master WHERE type='table';");
     if (statement.prepare() != SQLResultOk) {
         WTF_LOG_ERROR("Unable to retrieve list of tables for database %s", databaseDebugName().ascii().data());
         enableAuthorizer();
@@ skipping 38 matching lines @@
 SecurityOrigin* Database::securityOrigin() const
 {
     if (executionContext()->isContextThread())
         return m_contextThreadSecurityOrigin.get();
     if (databaseContext()->databaseThread()->isDatabaseThread())
         return m_databaseThreadSecurityOrigin.get();
     return 0;
 }
 
 } // namespace blink