Remove worker support of Web SQL Database.

Source/modules/modules.gypi

 {
   'includes': [
     '../core/core_generated.gypi',
     'modules_generated.gypi',
   ],
   'variables': {
     # Experimental hooks for embedder to provide extra IDL and source files.
     #
     # Note: this is not a supported API. If you rely on this, you will be broken
     # from time to time as the code generator changes in backward incompatible
@@ skipping 162 matching lines @@
       'webaudio/MediaStreamAudioSourceNode.idl',
       'webaudio/OfflineAudioCompletionEvent.idl',
       'webaudio/OfflineAudioContext.idl',
       'webaudio/OscillatorNode.idl',
       'webaudio/PannerNode.idl',
       'webaudio/PeriodicWave.idl',
       'webaudio/ScriptProcessorNode.idl',
       'webaudio/WaveShaperNode.idl',
       'webdatabase/Database.idl',
       'webdatabase/DatabaseCallback.idl',
-      'webdatabase/DatabaseSync.idl',
       'webdatabase/SQLError.idl',
       'webdatabase/SQLResultSet.idl',
       'webdatabase/SQLResultSetRowList.idl',
       'webdatabase/SQLStatementCallback.idl',
       'webdatabase/SQLStatementErrorCallback.idl',
       'webdatabase/SQLTransaction.idl',
       'webdatabase/SQLTransactionCallback.idl',
       'webdatabase/SQLTransactionErrorCallback.idl',
-      'webdatabase/SQLTransactionSync.idl',
-      'webdatabase/SQLTransactionSyncCallback.idl',
       'webmidi/MIDIAccess.idl',
       'webmidi/MIDIConnectionEvent.idl',
       'webmidi/MIDIErrorCallback.idl',
       'webmidi/MIDIInput.idl',
       'webmidi/MIDIInputMap.idl',
       'webmidi/MIDIMessageEvent.idl',
       'webmidi/MIDIOutput.idl',
       'webmidi/MIDIOutputMap.idl',
       'webmidi/MIDIPort.idl',
       'webmidi/MIDISuccessCallback.idl',
@@ skipping 38 matching lines @@
       'quota/NavigatorStorageQuota.idl',
       'quota/WindowQuota.idl',
       'quota/WorkerNavigatorStorageQuota.idl',
       'screen_orientation/ScreenScreenOrientation.idl',
       'serviceworkers/NavigatorServiceWorker.idl',
       'speech/WindowSpeech.idl',
       'speech/WindowSpeechSynthesis.idl',
       'vibration/NavigatorVibration.idl',
       'webaudio/WindowWebAudio.idl',
       'webdatabase/WindowWebDatabase.idl',
-      'webdatabase/WorkerGlobalScopeWebDatabase.idl',
       'webmidi/NavigatorWebMIDI.idl',
     ],
     # interfaces that inherit from Event
     'modules_event_idl_files': [
       'device_light/DeviceLightEvent.idl',
       'device_orientation/DeviceMotionEvent.idl',
       'device_orientation/DeviceOrientationEvent.idl',
       'encryptedmedia/MediaKeyMessageEvent.idl',
       'encryptedmedia/MediaKeyNeededEvent.idl',
       'gamepad/GamepadEvent.idl',
@@ skipping 600 matching lines @@
       'webdatabase/ChangeVersionWrapper.h',
       'webdatabase/DOMWindowWebDatabase.cpp',
       'webdatabase/DOMWindowWebDatabase.h',
       'webdatabase/Database.cpp',
       'webdatabase/DatabaseAuthorizer.cpp',
       'webdatabase/DatabaseAuthorizer.h',
       'webdatabase/DatabaseBackend.cpp',
       'webdatabase/DatabaseBackend.h',
       'webdatabase/DatabaseBackendBase.cpp',
       'webdatabase/DatabaseBackendBase.h',
-      'webdatabase/DatabaseBackendSync.cpp',
-      'webdatabase/DatabaseBackendSync.h',
       'webdatabase/DatabaseBase.cpp',
       'webdatabase/DatabaseBase.h',
       'webdatabase/DatabaseBasicTypes.h',
       'webdatabase/DatabaseCallback.h',
       'webdatabase/DatabaseClient.cpp',
       'webdatabase/DatabaseClient.h',
       'webdatabase/DatabaseContext.cpp',
       'webdatabase/DatabaseContext.h',
       'webdatabase/DatabaseError.h',
       'webdatabase/DatabaseManager.cpp',
       'webdatabase/DatabaseManager.h',
       'webdatabase/DatabaseServer.cpp',
       'webdatabase/DatabaseServer.h',
-      'webdatabase/DatabaseSync.cpp',
-      'webdatabase/DatabaseSync.h',
       'webdatabase/DatabaseTask.cpp',
       'webdatabase/DatabaseTask.h',
       'webdatabase/DatabaseThread.cpp',
       'webdatabase/DatabaseThread.h',
       'webdatabase/DatabaseTracker.cpp',
       'webdatabase/DatabaseTracker.h',
       'webdatabase/InspectorDatabaseAgent.cpp',
       'webdatabase/InspectorDatabaseAgent.h',
       'webdatabase/InspectorDatabaseResource.cpp',
       'webdatabase/InspectorDatabaseResource.h',
       'webdatabase/QuotaTracker.cpp',
       'webdatabase/QuotaTracker.h',
       'webdatabase/SQLCallbackWrapper.h',
       'webdatabase/SQLError.cpp',
       'webdatabase/SQLError.h',
       'webdatabase/SQLResultSet.cpp',
       'webdatabase/SQLResultSetRowList.cpp',
       'webdatabase/SQLStatement.cpp',
       'webdatabase/SQLStatement.h',
       'webdatabase/SQLStatementBackend.cpp',
       'webdatabase/SQLStatementBackend.h',
-      'webdatabase/SQLStatementSync.cpp',
-      'webdatabase/SQLStatementSync.h',
       'webdatabase/SQLTransaction.cpp',
       'webdatabase/SQLTransaction.h',
       'webdatabase/SQLTransactionBackend.cpp',
       'webdatabase/SQLTransactionBackend.h',
-      'webdatabase/SQLTransactionBackendSync.cpp',
-      'webdatabase/SQLTransactionBackendSync.h',
       'webdatabase/SQLTransactionClient.cpp',
       'webdatabase/SQLTransactionClient.h',
       'webdatabase/SQLTransactionCoordinator.cpp',
       'webdatabase/SQLTransactionCoordinator.h',
       'webdatabase/SQLTransactionState.h',
       'webdatabase/SQLTransactionStateMachine.cpp',
       'webdatabase/SQLTransactionStateMachine.h',
-      'webdatabase/SQLTransactionSync.cpp',
-      'webdatabase/SQLTransactionSync.h',
-      'webdatabase/SQLTransactionSyncCallback.h',
-      'webdatabase/WorkerGlobalScopeWebDatabase.cpp',
-      'webdatabase/WorkerGlobalScopeWebDatabase.h',
       'webdatabase/sqlite/SQLValue.cpp',
       'webdatabase/sqlite/SQLiteAuthorizer.cpp',
       'webdatabase/sqlite/SQLiteDatabase.cpp',
       'webdatabase/sqlite/SQLiteDatabase.h',
       'webdatabase/sqlite/SQLiteFileSystem.cpp',
       'webdatabase/sqlite/SQLiteFileSystem.h',
       'webdatabase/sqlite/SQLiteFileSystemPosix.cpp',
       'webdatabase/sqlite/SQLiteFileSystemWin.cpp',
       'webdatabase/sqlite/SQLiteStatement.cpp',
       'webdatabase/sqlite/SQLiteStatement.h',
@@ skipping 91 matching lines @@
       'serviceworkers/ServiceWorkerContainerTest.cpp',
       'websockets/DOMWebSocketTest.cpp',
       'websockets/NewWebSocketChannelImplTest.cpp',
       'websockets/WebSocketDeflaterTest.cpp',
       'websockets/WebSocketExtensionDispatcherTest.cpp',
       'websockets/WebSocketExtensionParserTest.cpp',
       'websockets/WebSocketPerMessageDeflateTest.cpp',
     ],
   },
 }