[Alignment] Single class for holding the alignment data.

Source/core/core.gypi

 {
     'includes': [
         'core_generated.gypi',
     ],
     'variables': {
         # Files for which bindings (.cpp and .h files) will be generated
         'core_idl_files': [
             'animation/Animation.idl',
             'animation/AnimationEffect.idl',
             'animation/AnimationNode.idl',
@@ skipping 801 matching lines @@
             'style/ComputedStyle.h',
             'style/NinePieceImage.cpp',
             'style/PathStyleMotionPath.cpp',
             'style/PathStyleMotionPath.h',
             'style/QuotesData.cpp',
             'style/QuotesData.h',
             'style/ShadowData.cpp',
             'style/ShadowData.h',
             'style/ShadowList.cpp',
             'style/ShadowList.h',
+            'style/StyleAlignmentData.cpp',
             'style/StyleBackgroundData.cpp',
             'style/StyleBoxData.cpp',
             'style/StyleDeprecatedFlexibleBoxData.cpp',
             'style/StyleFetchedImage.cpp',
             'style/StyleFetchedImageSet.cpp',
             'style/StyleFilterData.cpp',
             'style/StyleFlexibleBoxData.cpp',
             'style/StyleGeneratedImage.cpp',
             'style/StyleGridData.cpp',
             'style/StyleGridItemData.cpp',
@@ skipping 2989 matching lines @@
             'paint/LayerClipRecorderTest.cpp',
             'paint/LayoutObjectDrawingRecorderTest.cpp',
             'paint/TextPainterTest.cpp',
             'streams/ReadableStreamReaderTest.cpp',
             'streams/ReadableStreamTest.cpp',
             'testing/PrivateScriptTestTest.cpp',
             'xml/parser/SharedBufferReaderTest.cpp',
         ],
     }
 }