[test] Add more Mongolian variation selector tests

From
https://code.google.com/p/chromium/issues/detail?id=393896

test/shaping/fonts/sha1sum/MANIFEST

@@ -3,7 +3,9 @@
 4cce528e99f600ed9c25a2b69e32eb94a03b4ae8.ttf
 813c2f8e5512187fd982417a7fb4286728e6f4a8.ttf
 8a9fea2a7384f2116e5b84a9b31f83be7850ce21.ttf
+9d64156923a1b9fed1e05f74599c16563eca42d9.ttf
 a919b33197965846f21074b24e30250d67277bce.ttf
+bb29ce50df2bdba2d10726427c6b7609bf460e04.ttf
 d629e7fedc0b350222d7987345fe61613fa3929a.ttf
 e207635780b42f898d58654b65098763e340f5c7.ttf
 ef86fe710cfea877bbe0dbb6946a1f88d0661031.ttf

test/shaping/tests/mongolian-variation-selector.tests

@@ -1,2 +1,3 @@
 fonts/sha1sum/37033cc5cf37bb223d7355153016b6ccece93b28.ttf:U+1826,U+180B,U+1826:[uni1826.E85E_ue.init1=0+599|uni1826.E856_ue.fina=2+750]
 fonts/sha1sum/ef86fe710cfea877bbe0dbb6946a1f88d0661031.ttf:U+1820,U+180B:[uni1820.E821_a.isol1=0+1199]
+fonts/sha1sum/bb29ce50df2bdba2d10726427c6b7609bf460e04.ttf:U+183A,U+1823,U+182E,U+182B,U+1822,U+1826,U+180B,U+1832,U+180B,U+1827,U+1837,U+0020,U+182D,U+182D,U+180B,U+0020,U+182D,U+180C,U+0020,U+182D,U+180D,U+200D,U+0020,U+182D,U+200D,U+182D,U+180B,U+200D,U+0020,U+182D,U+180C,U+200D,U+0020,U+182D,U+180D,U+200D,U+0020,U+200D,U+182D,U+200D,U+200D,U+182D,U+180B,U+200D,U+0020,U+200D,U+182D,U+180C,U+200D,U+0020,U+200D,U+182D,U+180D,U+200D,U+0020,U+200D,U+182D,U+200D,U+182D,U+180B,U+0020,U+200D,U+182D,U+180C,U+0020,U+1820,U+200C,U+182D,U+1820,U+1837,U+0020,U+1830,U+1824,U+1837,U+200D,U+200D,U+182D,U+1820,U+200D,U+0020,U+200D,U+182D,U+1824,U+182F,U+1822,U+0020,U+182A,U+1820,U+1822,U+182D,U+180E,U+1820,U+202F,U+1836,U+1822,U+1828:[uni183A1823.E971_ko.init=0+950|uni182E.E904_m.medi=2+400|uni182B1822.E8A6_pi.medi=3+1150|uni1826.E854_ue.medi1=5+1100|uni1832.E916_t.medi1=7+1000|uni1827.E85C_ee.medi=9+750|uni1837.E931_r.fina=10+750|space=11+500|uni182D.E8E2_g.init=12+1000|uni182D.E8E8_g.fina1=13+1250|space=15+500|uni182D.EA1B_g.isol2=16+1000|space=18+500|uni182D.EA1E_g.init3=19+650|space=21+0|space=22+500|uni182D.E8E2_g.init=23+1000|space=24+0|uni182D.E8E5_g.medi1=25+800|space=27+0|space=28+500|uni182D.EA1D_g.init2=29+950|space=31+0|space=32+500|uni182D.EA1E_g.init3=33+650|space=35+0|space=36+500|space=37+0|uni182D.E8E4_g.medi=38+800|space=39+0|space=40+0|uni182D.E8E5_g.medi1=41+800|space=43+0|space=44+500|space=45+0|uni182D.E8E6_g.medi2=46+650|space=48+0|space=49+500|space=50+0|uni182D.E8E6_g.medi2=51+650|space=53+0|space=54+500|space=55+0|uni182D.E8E4_g.medi=56+800|space=57+0|uni182D.E8E8_g.fina1=58+1250|space=60+500|space=61+0|uni182D.E8E9_g.fina2=62+1050|space=64+500|uni1820.E820_a.isol=65+1550|space=66+0|uni182D.E8E2_g.init=67+1000|uni1820.E823_a.medi=68+400|uni1837.E931_r.fina=69+750|space=70+500|uni1830.E90B_s.init=71+850|uni1824.E844_u.medi=72+600|uni1837.E930_r.medi=73+600|space=74+0|space=75+0|uni182D.E8E5_g.medi1=76+800|uni1820.E823_a.medi=77+400|space=78+0|space=79+500|space=80+0|uni182D.E8E5_g.medi1=81+800|uni1824.E844_u.medi=82+600|uni182F.E908_l.medi=83+400|uni1822.E837_i.fina=84+600|space=85+500|uni182A1820.E875_ba.init=86+1000|uni1822.E836_i.medi2=88+1000|uni182D.E8E8_g.fina1=89+1250|space=90+0|uni1820.E827_a.fina2=91+600|uni202F.nobreak=92+500|uni1836.E92B_y.init1=93+500|uni1822.E834_i.medi=94+500|uni1828.E866_n.fina=95+850]

test/shaping/texts/in-tree/shaper-arabic/script-mongolian/misc/MANIFEST

@@ -1,3 +1,4 @@
 misc.txt
 non-joining.txt
 poem.txt
+variation-selectors.txt

test/shaping/texts/in-tree/shaper-arabic/script-mongolian/misc/variation-selectors.txt

@@ -0,0 +1,8 @@
+ᠺᠣᠮᠫᠢᠦ᠋ᠲ᠋ᠧᠷ
+ᠭ ᠭ᠋ ᠭ᠌ ᠭ᠍‍     isol(,FVS1,FVS2,FVS3)
+ᠭ‍ ᠭ᠋‍ ᠭ᠌‍ ᠭ᠍‍     init(,FVS1,FVS2,FVS3)
+‍ᠭ‍ ‍ᠭ᠋‍ ‍ᠭ᠌‍ ‍ᠭ᠍‍      medi(,FVS1,FVS2,FVS3)
+‍ᠭ ‍ᠭ᠋ ‍ᠭ᠌      fina(,FVS1,FVS2)
+ᠠ‌ᠭᠠᠷ        ZWNJ
+ᠰᠤᠷ‍ ‍ᠭᠠ‍ ‍ᠭᠤᠯᠢ  ZWJ
+ᠪᠠᠢᠭ᠎ᠠ ᠶᠢᠨ   MVS,NNBSP