Tweak morejs expectation.

perf_expectations.json

 {"linux-release-64/sizes/chrome-bss/bss": {"reva": 105312, "revb": 105336, "type": "absolute", "improve": 595081, "regress": 657756, "sha1": "c1e34d47"},
  "linux-release-64/sizes/chrome-data/data": {"reva": 91119, "revb": 91326, "type": "absolute", "improve": 2309480, "regress": 2557742, "sha1": "fd84a9d2"},
  "linux-release-64/sizes/chrome-si/initializers": {"reva": 108055, "revb": 108059, "type": "absolute", "better": "lower", "improve": 294, "regress": 294, "tolerance": 0, "sha1": "b22b2b5a"},
  "linux-release-64/sizes/chrome-text/text": {"reva": 104463, "revb": 104463, "type": "absolute", "improve": 60823945, "regress": 67905522, "sha1": "6887f46b"},
  "linux-release-64/sizes/chrome.pak/chrome.pak": {"reva": 93584, "revb": 93660, "type": "absolute", "improve": 2893618, "regress": 3230516, "sha1": "ddcb764c"},
  "linux-release-64/sizes/chrome/chrome": {"reva": 99734, "revb": 100028, "type": "absolute", "improve": 78759552, "regress": 87104926, "sha1": "48bce0e1"},
  "linux-release-hardy/dhtml/commit_charge/cc": {"reva": 63231, "revb": 64325, "improve": -6947, "regress": 25528, "sha1": "0e22e67a"},
  "linux-release-hardy/dhtml/processes/proc_": {"improve": 0, "regress": 0, "sha1": "696fcb0f"},
  "linux-release-hardy/dhtml/times/t": {"reva": 99393, "revb": 100034, "improve": -68, "regress": 21, "sha1": "9c13cabb"},
  "linux-release-hardy/dhtml/total_byte_b/IO_b": {"reva": 85983, "revb": 88209, "improve": 4132, "regress": 6013, "sha1": "b7cb3bfb"},
@@ skipping 83 matching lines @@
  "vista-release-single-core/intl2/times/t": {"reva": 109758, "revb": 110201, "improve": 268, "regress": 917, "sha1": "d66cc5dc"},
  "vista-release-single-core/morejs/times/t": {"reva": 110295, "revb": 110306, "improve": 174, "regress": 258, "sha1": "25fde835"},
  "vista-release-single-core/moz/times/t": {"reva": 104862, "revb": 105544, "improve": 185, "regress": 565, "sha1": "43ada48f"},
  "vista-release-single-core/startup/times/t": {"improve": -9, "regress": 9, "sha1": "cb61d833"},
  "xp-release-dual-core/dhtml/times/t": {"reva": 104424, "revb": 104645, "improve": -80, "regress": 1972, "sha1": "9f34f008"},
  "xp-release-dual-core/dom_perf/Total/score": {"reva": 109368, "revb": 110202, "improve": 103, "regress": -21, "sha1": "2b13dbc0"},
  "xp-release-dual-core/dromaeo_domcore/score/score": {"improve": 284, "regress": 236, "sha1": "35178029"},
  "xp-release-dual-core/dromaeo_jslib/score/score": {"improve": 18, "regress": -6, "sha1": "bd9f8469"},
  "xp-release-dual-core/intl1/times/t": {"reva": 109829, "revb": 109902, "improve": 256, "regress": 427, "sha1": "8384ba17"},
  "xp-release-dual-core/intl2/times/t": {"reva": 109757, "revb": 109902, "improve": -257, "regress": 288, "sha1": "5d0ef4d4"},
- "xp-release-dual-core/morejs/times/t": {"reva": 110293, "revb": 110309, "improve": 89, "regress": 116, "sha1": "1a0756d6"},
+ "xp-release-dual-core/morejs/times/t": {"reva": 110293, "revb": 110345, "improve": 89, "regress": 138, "sha1": "ab91db2a"},
  "xp-release-dual-core/moz/times/t": {"reva": 107830, "revb": 109711, "improve": 81, "regress": 176, "sha1": "73d87dab"},
  "xp-release-dual-core/moz/total_byte_b/IO_b": {"reva": 109376, "revb": 109471, "improve": 1046, "regress": 2965, "sha1": "0b75c6e0"},
  "xp-release-dual-core/moz/total_byte_r/IO_r": {"reva": 109371, "revb": 109381, "improve": 741, "regress": 848, "sha1": "8cbb3f0b"},
  "xp-release-dual-core/moz/total_op_b/IO_op_b": {"reva": 104424, "revb": 104572, "improve": 6497, "regress": 125226, "sha1": "42471143"},
  "xp-release-dual-core/moz/total_op_r/IO_op_r": {"reva": 109757, "revb": 109902, "improve": 2297, "regress": 3752, "sha1": "2cd1ada7"},
  "xp-release-dual-core/moz/vm_peak_b/vm_pk_b": {"reva": 102636, "revb": 102660, "improve": 1910579, "regress": 5027636, "sha1": "974f5699"},
  "xp-release-dual-core/moz/vm_peak_r/vm_pk_r": {"reva": 109757, "revb": 109902, "improve": 6650060, "regress": 9152103, "sha1": "26db3518"},
  "xp-release-dual-core/startup/warm/t": {"reva": 76825, "revb": 77094, "improve": -107, "regress": 141, "sha1": "e0dcf672"},
  "xp-release-dual-core/v8_benchmark/score/score": {"reva": 68696, "revb": 69071, "improve": 892, "regress": -668, "sha1": "75a383d3"},
  "xp-release-single-core/dhtml/times/t": {"reva": 98602, "revb": 99994, "improve": -2888, "regress": 3391, "sha1": "30683762"},
  "xp-release-single-core/intl1/times/t": {"reva": 110077, "revb": 110200, "improve": 1069, "regress": 1449, "sha1": "3643d263"},
  "xp-release-single-core/intl2/times/t": {"reva": 105307, "revb": 105734, "improve": 69, "regress": 1117, "sha1": "8aa60255"},
  "xp-release-single-core/morejs/times/t": {"reva": 104308, "revb": 104575, "improve": -32, "regress": 485, "sha1": "e63333ad"},
  "xp-release-single-core/moz/times/t": {"reva": 75758, "revb": 76221, "improve": -1705, "regress": 3304, "sha1": "b615a416"},
  "xp-release-single-core/startup/times/t": {"improve": -9, "regress": 9, "sha1": "b1bf03da"},
  "xp-release/sizes/chrome.dll/chrome.dll": {"reva": 100820, "revb": 100961, "type": "absolute", "improve": 35191526, "regress": 38926004, "sha1": "94524a77"},
  "xp-release/sizes/chrome.exe/chrome.exe": {"reva": 81814, "revb": 82805, "type": "absolute", "improve": 1057453, "regress": 1180570, "sha1": "24fe20f6"},
  "xp-release/sizes/mini_installer.exe/mini_installer.exe": {"reva": 106747, "revb": 106771, "type": "absolute", "improve": 19560089, "regress": 21758823, "sha1": "f29a1a3c"},
  "xp-release/sizes/setup.exe/setup.exe": {"reva": 81852, "revb": 82805, "type": "absolute", "improve": 1127275, "regress": 1258522, "sha1": "13bbca59"},
  "load": true
 }