Fix default text orientation that do not conform Unicode Technical Report #50

Source/platform/fonts/FontOrientation.h

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 #ifndef FontOrientation_h
 #define FontOrientation_h
 
+#include "platform/fonts/Character.h"
+
 namespace blink {
 
 enum class FontOrientation {
     // Horizontal; i.e., writing-mode: horizontal-tb
     Horizontal = 0,
     // Baseline is vertical but use rotated horizontal typography; i.e., writing-mode: vertical-*; text-orientation: sideways-*
     VerticalRotated = 1,
     // Vertical with upright CJK and rotated non-CJK; i.e., writing-mode: vertical-*, text-orientation: mixed
     VerticalMixed = 2,
     // Vertical with all upright; i.e., writing-mode: vertical-*, text-orientation: upright
     VerticalUpright = 3,
 
     BitCount = 2,
 
     AnyUprightMask = 2,
 };
 
 inline bool operator&(FontOrientation value, FontOrientation mask) { return static_cast<unsigned>(value) & static_cast<unsigned>(mask); }
 inline bool isVerticalAnyUpright(FontOrientation orientation) { return orientation & FontOrientation::AnyUprightMask; }
 inline bool isVerticalNonCJKUpright(FontOrientation orientation) { return orientation == FontOrientation::VerticalUpright; }
+inline bool isVerticalUpright(FontOrientation orientation, UChar32 character)
+{
+    return orientation == FontOrientation::VerticalUpright
+        || (orientation == FontOrientation::VerticalMixed && Character::isUprightInMixedVertical(character));
+}
 inline bool isVerticalBaseline(FontOrientation orientation) { return orientation != FontOrientation::Horizontal; }
 
 } // namespace blink
 
 #endif // FontOrientation_h