Switch to HarfBuzz on Mac and remove CoreText shaper

Source/platform/blink_platform.gypi

 {
   'includes': [
     'platform_generated.gypi',
   ],
   'variables': {
     'platform_files': [
       'AsyncFileSystemCallbacks.h',
       'CalculationValue.h',
       'CheckedInt.h',
       'Clock.cpp',
@@ skipping 374 matching lines @@
       'fonts/SimpleShaper.h',
       'fonts/TextBlob.h',
       'fonts/VDMXParser.cpp',
       'fonts/VDMXParser.h',
       'fonts/WidthCache.h',
       'fonts/android/FontCacheAndroid.cpp',
       'fonts/cocoa/FontPlatformDataCocoa.mm',
       'fonts/harfbuzz/FontHarfBuzz.cpp',
       'fonts/harfbuzz/HarfBuzzFace.cpp',
       'fonts/harfbuzz/HarfBuzzFace.h',
-      'fonts/harfbuzz/HarfBuzzFaceCoreText.cpp',
+      'fonts/harfbuzz/HarfBuzzFaceCoreText.mm',
       'fonts/harfbuzz/HarfBuzzFaceSkia.cpp',
       'fonts/harfbuzz/HarfBuzzShaper.cpp',
       'fonts/harfbuzz/HarfBuzzShaper.h',
       'fonts/linux/FontCacheLinux.cpp',
       'fonts/linux/FontPlatformDataLinux.cpp',
-      'fonts/mac/ComplexTextController.cpp',
-      'fonts/mac/ComplexTextController.h',
-      'fonts/mac/ComplexTextControllerCoreText.mm',
       'fonts/mac/FontCacheMac.mm',
-      'fonts/mac/FontComplexTextMac.cpp',
       'fonts/mac/FontCustomPlatformDataMac.cpp',
-      'fonts/mac/FontMac.cpp',
       'fonts/mac/MemoryActivatedFont.h',
       'fonts/mac/MemoryActivatedFont.mm',
-      'fonts/mac/SimpleFontDataCoreText.cpp',
-      'fonts/mac/SimpleFontDataMac.mm',
       'fonts/opentype/OpenTypeSanitizer.cpp',
       'fonts/opentype/OpenTypeSanitizer.h',
       'fonts/opentype/OpenTypeTypes.h',
       'fonts/opentype/OpenTypeUtilities.cpp',
       'fonts/opentype/OpenTypeUtilities.h',
       'fonts/opentype/OpenTypeVerticalData.cpp',
       'fonts/opentype/OpenTypeVerticalData.h',
       'fonts/skia/FontCacheSkia.cpp',
       'fonts/skia/FontCustomPlatformDataSkia.cpp',
       'fonts/skia/FontPlatformDataSkia.cpp',
@@ skipping 540 matching lines @@
       'graphics/ImageFrameGeneratorTest.cpp',
       'graphics/ImageLayerChromiumTest.cpp',
       'graphics/test/MockImageDecoder.h',
       'graphics/test/MockWebGraphicsContext3D.h',
       'image-decoders/gif/GIFImageDecoderTest.cpp',
       'image-decoders/jpeg/JPEGImageDecoderTest.cpp',
       'image-decoders/webp/WEBPImageDecoderTest.cpp',
     ],
   },
 }