Add SVG Text to support the CSS 'text-orientation' property

third_party/WebKit/Source/platform/fonts/FontOrientation.h

Index: third_party/WebKit/Source/platform/fonts/FontOrientation.h
diff --git a/third_party/WebKit/Source/platform/fonts/FontOrientation.h b/third_party/WebKit/Source/platform/fonts/FontOrientation.h
index b7dde29e1eb07d3120a221b3f23c865201c803d7..19d7e5f7c181b78a48605d88d10743f481f0401d 100644
--- a/third_party/WebKit/Source/platform/fonts/FontOrientation.h
+++ b/third_party/WebKit/Source/platform/fonts/FontOrientation.h
@@ -55,6 +55,15 @@ inline bool isVerticalUpright(FontOrientation orientation, UChar32 character)
 }
 inline bool isVerticalBaseline(FontOrientation orientation) { return orientation != FontOrientation::Horizontal; }
 
+inline FontOrientation adjustOrientationForCharacterInMixedVertical(FontOrientation orientation, UChar32 character)
+{
+    if (orientation != FontOrientation::VerticalMixed)
+        return orientation;
+    return Character::isUprightInMixedVertical(character)
+        ? FontOrientation::VerticalUpright
+        : FontOrientation::VerticalRotated;
+}
+
 } // namespace blink
 
 #endif // FontOrientation_h