Whitespace only text nodes need to be reattached when their siblings are reattached

Source/core/core.gypi

 {
     'variables': {
         'core_idl_files': [
             'css/CSS.idl',
             'css/CSSCharsetRule.idl',
             'css/CSSFontFaceLoadEvent.idl',
             'css/CSSFontFaceRule.idl',
             'css/CSSHostRule.idl',
             'css/CSSImportRule.idl',
             'css/CSSKeyframeRule.idl',
@@ skipping 2037 matching lines @@
             'dom/TreeWalker.cpp',
             'dom/TreeWalker.h',
             'dom/UserActionElementSet.cpp',
             'dom/UserActionElementSet.h',
             'dom/ViewportDescription.cpp',
             'dom/ViewportDescription.h',
             'dom/VisitedLinkState.cpp',
             'dom/VisitedLinkState.h',
             'dom/WheelController.cpp',
             'dom/WheelController.h',
-            'dom/WhitespaceChildList.h',
             'events/AutocompleteErrorEvent.h',
             'events/BeforeLoadEvent.h',
             'events/BeforeTextInsertedEvent.cpp',
             'events/BeforeTextInsertedEvent.h',
             'events/BeforeUnloadEvent.cpp',
             'events/BeforeUnloadEvent.h',
             'events/ClipboardEvent.cpp',
             'events/ClipboardEvent.h',
             'events/CompositionEvent.cpp',
             'events/CompositionEvent.h',
@@ skipping 1478 matching lines @@
             'platform/graphics/gpu/DrawingBufferTest.cpp',
             'platform/image-decoders/ImageDecoderTest.cpp',
             'platform/image-decoders/gif/GIFImageDecoderTest.cpp',
             'platform/image-decoders/jpeg/JPEGImageDecoderTest.cpp',
             'platform/image-decoders/webp/WEBPImageDecoderTest.cpp',
             'platform/testing/FakeWebGraphicsContext3D.h',
             'rendering/RenderOverflowTest.cpp',
         ],
     }
 }