Extend FontCache fallback API to support FontFallbackPriority

third_party/WebKit/Source/wtf/text/CharacterNames.h

Index: third_party/WebKit/Source/wtf/text/CharacterNames.h
diff --git a/third_party/WebKit/Source/wtf/text/CharacterNames.h b/third_party/WebKit/Source/wtf/text/CharacterNames.h
index 6436b1996ee913816cf863de450448efd8d417ef..4c5b7d5160ca9e6f1e7d070726e13c8bf45fd0eb 100644
--- a/third_party/WebKit/Source/wtf/text/CharacterNames.h
+++ b/third_party/WebKit/Source/wtf/text/CharacterNames.h
@@ -52,6 +52,7 @@ const UChar combiningEnclosingKeycapCharacter = 0x20E3;
 const UChar ethiopicPrefaceColonCharacter = 0x1366;
 const UChar ethiopicWordspaceCharacter = 0x1361;
 const UChar32 eyeCharacter = 0x1F441;
+const UChar32 familyCharacter = 0x1F46A;
 const UChar firstStrongIsolateCharacter = 0x2068;
 const UChar fisheyeCharacter = 0x25C9;
 const UChar fullstopCharacter = 0x002E;
@@ -134,6 +135,7 @@ using WTF::Unicode::combiningEnclosingCircleBackslashCharacter;
 using WTF::Unicode::ethiopicPrefaceColonCharacter;
 using WTF::Unicode::ethiopicWordspaceCharacter;
 using WTF::Unicode::eyeCharacter;
+using WTF::Unicode::familyCharacter;
 using WTF::Unicode::firstStrongIsolateCharacter;
 using WTF::Unicode::fisheyeCharacter;
 using WTF::Unicode::fullstopCharacter;