Oilpan: move core/workers to oilpan's heap.

Source/core/core.gypi

 {
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/Player.idl',
             'animation/TimedItem.idl',
             'animation/Timeline.idl',
             'animation/Timing.idl',
             'clipboard/Clipboard.idl',
@@ skipping 1723 matching lines @@
             'workers/WorkerConsole.cpp',
             'workers/WorkerConsole.h',
             'workers/WorkerEventQueue.cpp',
             'workers/WorkerEventQueue.h',
             'workers/WorkerGlobalScope.cpp',
             'workers/WorkerGlobalScope.h',
             'workers/WorkerGlobalScopeProxy.h',
             'workers/WorkerGlobalScopeProxyProvider.cpp',
             'workers/WorkerGlobalScopeProxyProvider.h',
             'workers/WorkerLoaderProxy.h',
+            'workers/WorkerLocation.cpp',
             'workers/WorkerLocation.h',
             'workers/WorkerMessagingProxy.cpp',
             'workers/WorkerMessagingProxy.h',
             'workers/WorkerNavigator.cpp',
             'workers/WorkerNavigator.h',
             'workers/WorkerObjectProxy.cpp',
             'workers/WorkerObjectProxy.h',
             'workers/WorkerReportingProxy.h',
             'workers/WorkerRunLoop.cpp',
             'workers/WorkerScriptLoader.cpp',
@@ skipping 1517 matching lines @@
             'html/parser/HTMLParserThreadTest.cpp',
             'html/track/vtt/BufferedLineReaderTest.cpp',
             'html/track/vtt/VTTScannerTest.cpp',
             'rendering/RenderOverflowTest.cpp',
             'rendering/shapes/BoxShapeTest.cpp',
             'testing/UnitTestHelpers.cpp',
             'testing/UnitTestHelpers.h',
         ],
     }
 }