Oilpan: Remove GC_INFO_{DEFINE,DECLARE} macros

Source/modules/modules.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
     # ways.
     'extra_blink_module_idl_files': [],
     'extra_blink_module_files': [],
     # Files for which bindings (.cpp and .h files) will be generated
@@ skipping 330 matching lines @@
       'gamepad/Gamepad.cpp',
       'gamepad/Gamepad.h',
       'gamepad/GamepadList.cpp',
       'gamepad/GamepadList.h',
       'gamepad/NavigatorGamepad.cpp',
       'gamepad/NavigatorGamepad.h',
       'geolocation/Coordinates.cpp',
       'geolocation/Geolocation.cpp',
       'geolocation/GeolocationController.cpp',
       'geolocation/GeolocationInspectorAgent.cpp',
-      'geolocation/Geoposition.cpp',
       'geolocation/NavigatorGeolocation.cpp',
       'geolocation/NavigatorGeolocation.h',
-      'geolocation/PositionError.cpp',
-      'geolocation/PositionOptions.cpp',
       'imagebitmap/ImageBitmapFactories.cpp',
       'imagebitmap/ImageBitmapFactories.h',
       'indexeddb/DOMWindowIndexedDatabase.cpp',
       'indexeddb/DOMWindowIndexedDatabase.h',
       'indexeddb/IDBAny.cpp',
       'indexeddb/IDBAny.h',
       'indexeddb/IDBCursor.cpp',
       'indexeddb/IDBCursor.h',
       'indexeddb/IDBCursorWithValue.cpp',
       'indexeddb/IDBCursorWithValue.h',
@@ skipping 479 matching lines @@
       'indexeddb/IDBKeyPathTest.cpp',
       'indexeddb/IDBRequestTest.cpp',
       'indexeddb/IDBTransactionTest.cpp',
       'websockets/WebSocketDeflaterTest.cpp',
       'websockets/WebSocketExtensionDispatcherTest.cpp',
       'websockets/WebSocketExtensionParserTest.cpp',
       'websockets/WebSocketPerMessageDeflateTest.cpp',
     ],
   },
 }