Unicode Variation Selectors support in collectCandidateRuns

Source/platform/fonts/shaping/HarfBuzzShaper.cpp

Index: Source/platform/fonts/shaping/HarfBuzzShaper.cpp
diff --git a/Source/platform/fonts/shaping/HarfBuzzShaper.cpp b/Source/platform/fonts/shaping/HarfBuzzShaper.cpp
index 44fcb3245b14168d38ef1e73f4016025a5fbcc78..64f31044708cba9bb1d2af23a293126787b3a5be 100644
--- a/Source/platform/fonts/shaping/HarfBuzzShaper.cpp
+++ b/Source/platform/fonts/shaping/HarfBuzzShaper.cpp
@@ -579,9 +579,10 @@ static inline bool collectCandidateRuns(const UChar* normalizedBuffer,
             if (Character::treatAsZeroWidthSpace(character))
                 continue;
             if ((U_GET_GC_MASK(character) & U_GC_M_MASK)
-                && currentFontData->canRenderCombiningCharacterSequence(
-                    currentCharacterPosition,
-                    iterator.glyphEnd() - currentCharacterPosition))
+                && (Character::isUnicodeVariationSelector(character)
+                    || currentFontData->canRenderCombiningCharacterSequence(
+                        currentCharacterPosition,
+                        iterator.glyphEnd() - currentCharacterPosition)))
                 continue;
 
             nextFontData = font->glyphDataForCharacter(character, false, isSpaceNormalize).fontData;