Remove worker support of Web SQL Database.

Source/modules/webdatabase/DatabaseBackendSync.cpp

Index: Source/modules/webdatabase/DatabaseBackendSync.cpp
diff --git a/Source/modules/webdatabase/DatabaseBackendSync.cpp b/Source/modules/webdatabase/DatabaseBackendSync.cpp
deleted file mode 100644
index b5bbd5a0e8a619edc2c3ca799745f0c10b16590e..0000000000000000000000000000000000000000
--- a/Source/modules/webdatabase/DatabaseBackendSync.cpp
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * 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
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "modules/webdatabase/DatabaseBackendSync.h"
-
-#include "modules/webdatabase/DatabaseContext.h"
-#include "modules/webdatabase/DatabaseTracker.h"
-
-namespace blink {
-
-DatabaseBackendSync::DatabaseBackendSync(DatabaseContext* databaseContext, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize)
-    : DatabaseBackendBase(databaseContext, name, expectedVersion, displayName, estimatedSize, DatabaseType::Sync)
-{
-}
-
-DatabaseBackendSync::~DatabaseBackendSync()
-{
-#if !ENABLE(OILPAN)
-    // SQLite is "multi-thread safe", but each database handle can only be used
-    // on a single thread at a time.
-    //
-    // For DatabaseBackendSync, we open the SQLite database on the script context
-    // thread. And hence we should also close it on that same thread. This means
-    // that the SQLite database need to be closed here in the destructor.
-    if (opened()) {
-        ASSERT(m_databaseContext->isContextThread());
-        closeDatabase();
-    }
-#endif
-    ASSERT(!opened());
-}
-
-void DatabaseBackendSync::trace(Visitor* visitor)
-{
-    DatabaseBackendBase::trace(visitor);
-}
-
-bool DatabaseBackendSync::openAndVerifyVersion(bool setVersionInNewDatabase, DatabaseError& error, String& errorMessage)
-{
-    DatabaseTracker::tracker().prepareToOpenDatabase(this);
-    return performOpenAndVerify(setVersionInNewDatabase, error, errorMessage);
-}
-
-} // namespace blink