Update expectations for v8 roll to 3.12.19 and skia roll to 4904.

tools/perf_expectations/perf_expectations.json

 {"linux-release-64/sizes/chrome-bss/bss": {"reva": 149187, "revb": 149210, "type": "absolute", "better": "lower", "improve": 496924, "regress": 549232, "sha1": "0293f543"},
  "linux-release-64/sizes/chrome-data/data": {"reva": 149175, "revb": 149210, "type": "absolute", "better": "lower", "improve": 2687018, "regress": 2969871, "sha1": "5833dabd"},
  "linux-release-64/sizes/chrome-si/initializers": {"reva": 145035, "revb": 145035, "type": "absolute", "better": "lower", "improve": 43, "regress": 43, "tolerance": 0, "sha1": "fa5fa232"},
  "linux-release-64/sizes/chrome-text/text": {"reva": 140708, "revb": 140809, "type": "absolute", "better": "lower", "improve": 72677056, "regress": 80362461, "sha1": "3f8348cd"},
  "linux-release-64/sizes/chrome.pak/chrome.pak": {"reva": 144090, "revb": 146227, "type": "absolute", "better": "lower", "improve": 3707774, "regress": 4832382, "sha1": "d7e07c9a"},
  "linux-release-64/sizes/chrome/chrome": {"reva": 148945, "revb": 149055, "type": "absolute", "improve": 99348704, "regress": 109933875, "sha1": "2be6d661"},
  "linux-release-64/sizes/nacl_helper-bss/bss": {"reva": 149187, "revb": 149210, "type": "absolute", "better": "lower", "improve": 287694, "regress": 317978, "sha1": "289255a0"},
  "linux-release-64/sizes/nacl_helper-data/data": {"reva": 129061, "revb": 129076, "type": "absolute", "better": "lower", "improve": 33405, "regress": 36923, "sha1": "effeb881"},
  "linux-release-64/sizes/nacl_helper-si/initializers": {"reva": 120278, "revb": 120278, "type": "absolute", "better": "lower", "improve": 17, "regress": 19, "sha1": "77a7c319"},
  "linux-release-64/sizes/nacl_helper-text/text": {"reva": 147670, "revb": 147675, "type": "absolute", "better": "lower", "improve": 905631, "regress": 1000961, "sha1": "1234c90a"},
@@ skipping 17 matching lines @@
  "linux-release-lowmem/morejs/times/t": {"reva": 81070, "revb": 81884, "improve": -590, "regress": 707, "sha1": "34517cce"},
  "linux-release-lowmem/moz-http/times/t": {"reva": 81070, "revb": 81884, "improve": -286, "regress": 909, "sha1": "03ab95f9"},
  "linux-release-lowmem/moz/times/t": {"reva": 147726, "revb": 148135, "improve": -197, "regress": 20, "sha1": "16ed2c6b"},
  "linux-release-lowmem/startup/warm/t": {"reva": 81070, "revb": 81884, "improve": -117, "regress": 181, "sha1": "c4652b14"},
  "linux-release-lowmem/sunspider/total/t": {"reva": 81217, "revb": 81884, "improve": -645, "regress": 722, "sha1": "35f98911"},
  "linux-release-lowmem/v8_benchmark/score/score": {"reva": 137891, "revb": 137961, "improve": -770, "regress": -1092, "sha1": "6d2739f5"},
  "linux-release/dhtml/times/t": {"reva": 137725, "revb": 137748, "improve": -233, "regress": -54, "sha1": "784909f8"},
  "linux-release/dom_perf/Total/score": {"reva": 148221, "revb": 148261, "improve": 102, "regress": 18, "sha1": "8c9c43eb"},
  "linux-release/dromaeo_jslib/jslib/score": {"reva": 144704, "revb": 145298, "better": "higher", "improve": 39, "regress": -6, "sha1": "a33d92a1"},
  "linux-release/intl1/times/t": {"reva": 143878, "revb": 143908, "improve": -320, "regress": -170, "sha1": "9b3e7d33"},
- "linux-release/intl2/times/t": {"reva": 143878, "revb": 143908, "improve": -426, "regress": -268, "sha1": "426986de"},
+ "linux-release/intl2/times/t": {"reva": 149625, "revb": 149636, "improve": -297, "regress": -218, "sha1": "bced63df"},
  "linux-release/media_tests_av_perf/audio_latency/latency": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 31, "regress": 55, "sha1": "c8079ca0"},
  "linux-release/media_tests_av_perf/audio_latency/latency_bg_clip": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 95, "regress": 156, "sha1": "64584dac"},
  "linux-release/media_tests_av_perf/cpu/crowd1080.webm": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 26, "regress": 34, "sha1": "584ed6e7"},
  "linux-release/media_tests_av_perf/cpu/crowd2160.webm": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 48, "regress": 55, "sha1": "d62dc323"},
  "linux-release/media_tests_av_perf/cpu/crowd360.webm": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 5, "regress": 8, "sha1": "ea501548"},
  "linux-release/media_tests_av_perf/cpu/crowd480.webm": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 9, "regress": 13, "sha1": "124b47ae"},
  "linux-release/media_tests_av_perf/cpu/crowd720.webm": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 15, "regress": 21, "sha1": "abf77639"},
  "linux-release/media_tests_av_perf/dropped_fps/crowd1080.webm": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 0, "regress": 0, "sha1": "399491ae"},
  "linux-release/media_tests_av_perf/dropped_fps/crowd2160.webm": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 0, "regress": 0, "sha1": "51f53e00"},
  "linux-release/media_tests_av_perf/dropped_fps/crowd360.webm": {"reva": 143995, "revb": 144097, "type": "absolute", "better": "lower", "improve": 0, "regress": 0, "sha1": "8563a4e6"},
@@ skipping 339 matching lines @@
  "mac-release-10.5/moz/times/t": {"reva": 105307, "revb": 106585, "improve": -547, "regress": 951, "sha1": "1f8be567"},
  "mac-release-10.5/startup/warm/t": {"reva": 99359, "revb": 100009, "improve": -69, "regress": 164, "sha1": "9bea4271"},
  "mac-release-10.5/v8_benchmark/score/score": {"reva": 137728, "revb": 137787, "improve": 740, "regress": -1333, "sha1": "7988678d"},
  "mac-release-10.6/dhtml/times/t": {"reva": 102535, "revb": 102746, "improve": -308, "regress": 523, "sha1": "77c6d24e"},
  "mac-release-10.6/dom_perf/Total/score": {"reva": 148248, "revb": 148335, "improve": 40, "regress": -32, "sha1": "af202e64"},
  "mac-release-10.6/intl1/times/t": {"reva": 147690, "revb": 148450, "improve": -151, "regress": 685, "sha1": "b375e694"},
  "mac-release-10.6/intl2/times/t": {"reva": 137731, "revb": 137769, "improve": -682, "regress": 627, "sha1": "2decf30d"},
  "mac-release-10.6/morejs/times/t": {"reva": 67956, "revb": 69048, "improve": -2546, "regress": 2597, "sha1": "f8cbaca1"},
  "mac-release-10.6/moz/times/t": {"reva": 68096, "revb": 69048, "improve": -3314, "regress": 2668, "sha1": "fe58113c"},
  "mac-release-10.6/startup/times/t": {"improve": -2, "regress": 22, "sha1": "132f6c77"},
- "mac-release-10.6/v8_benchmark/score/score": {"reva": 141208, "revb": 141737, "improve": 26, "regress": -275, "sha1": "95465de0"},
+ "mac-release-10.6/v8_benchmark/score/score": {"reva": 149403, "revb": 149635, "improve": 11, "regress": -502, "sha1": "93b5c561"},
  "mac-release/sizes/Chromium.app/Chromium.app": {"reva": 143606, "revb": 143606, "type": "absolute", "better": "lower", "improve": 87801036, "regress": 97043252, "sha1": "06d9fe6d"},
  "mac-release/sizes/Chromium/Chromium": {"reva": 143606, "revb": 143606, "type": "absolute", "better": "lower", "improve": 8291, "regress": 9165, "sha1": "2684fd2e"},
  "mac-release/sizes/ChromiumFramework/ChromiumFramework": {"reva": 143606, "revb": 143606, "type": "absolute", "better": "lower", "improve": 62256589, "regress": 68809915, "sha1": "43182446"},
  "mac-release/sizes/chrome-si/initializers": {"reva": 148915, "revb": 148915, "type": "absolute", "better": "lower", "improve": 13, "regress": 13, "tolerance": 0, "sha1": "824a7c28"},
  "vista-release-dual-core/dhtml/times/t": {"reva": 137754, "revb": 137875, "improve": -63, "regress": 119, "sha1": "30704ad7"},
  "vista-release-dual-core/dom_perf/Total/score": {"reva": 116076, "revb": 116185, "improve": 168, "regress": 14, "sha1": "0ed1219b"},
  "vista-release-dual-core/intl1/times/t": {"reva": 142934, "revb": 143705, "improve": -341, "regress": 265, "sha1": "229e5c52"},
  "vista-release-dual-core/intl2/times/t": {"reva": 142359, "revb": 142427, "improve": -184, "regress": 44, "sha1": "64d19d74"},
  "vista-release-dual-core/morejs/times/t": {"reva": 99583, "revb": 100012, "improve": -93, "regress": 371, "sha1": "bf629d5e"},
  "vista-release-dual-core/moz/times/t": {"reva": 68696, "revb": 69048, "improve": -188, "regress": 545, "sha1": "b4d5a41c"},
@@ skipping 26 matching lines @@
  "xp-release-single-core/intl2/times/t": {"reva": 141097, "revb": 142602, "improve": -849, "regress": 77, "sha1": "25c1c087"},
  "xp-release-single-core/morejs/times/t": {"reva": 141097, "revb": 142602, "improve": -308, "regress": 436, "sha1": "8282a308"},
  "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": 147669, "revb": 147717, "type": "absolute", "improve": 45019724, "regress": 49825306, "sha1": "a278eebe"},
  "xp-release/sizes/chrome.exe/chrome.exe": {"reva": 109519, "revb": 110703, "type": "absolute", "improve": 1116774, "regress": 1239706, "sha1": "69996492"},
  "xp-release/sizes/mini_installer.exe/mini_installer.exe": {"reva": 124098, "revb": 133304, "type": "absolute", "improve": 20609254, "regress": 24072653, "sha1": "e01f4d11"},
  "xp-release/sizes/setup.exe/setup.exe": {"reva": 128672, "revb": 128741, "type": "absolute", "improve": 1436825, "regress": 1588608, "sha1": "aba5e95e"},
  "load": true
 }