Update sizes expectations for chrome-bss.

https://chromeperf.appspot.com/report?masters=Chromium&bots=chromium-rel-linux-64&tests=sizes%2Fchrome-bss&checked=all&start_rev=255766&end_rev=260470

The addition of a library has caused the sizes bot to fail. This CL updates
the sizes expectations.

NOTREECHECKS=true
NOTRY=true
BUG=358051
TBR=waffles@chromium.org

Review URL: https://codereview.chromium.org/218803002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@260473 0039d316-1c4b-4281-b951-d872f2087c98

tools/perf_expectations/perf_expectations.json

-{"linux-release-64/sizes/chrome-bss/bss": {"reva": 241266, "revb": 241318, "type": "absolute", "better": "lower", "improve": 418191, "regress": 462313, "sha1": "8c1f23fd"},
+{"linux-release-64/sizes/chrome-bss/bss": {"reva": 260243, "revb": 260470, "type": "absolute", "better": "lower", "improve": 438939, "regress": 485548, "sha1": "b7ff728d"},
  "linux-release-64/sizes/chrome-data/data": {"reva": 234134, "revb": 234142, "type": "absolute", "better": "lower", "improve": 3545643, "regress": 4416393, "sha1": "3a535ea6"},
  "linux-release-64/sizes/chrome-si/initializers": {"reva": 251214, "revb": 251214, "type": "absolute", "better": "lower", "improve": 18, "regress": 18, "tolerance": 0, "sha1": "c5c67b89"},
  "linux-release-64/sizes/chrome-text/text": {"reva": 255987, "revb": 256040, "type": "absolute", "better": "lower", "improve": 92006743, "regress": 101693710, "sha1": "fc008772"},
@@ -362,7 +362,7 @@
  "linux-release/media_tests_av_perf/ttp/Wifi_dartmoor2.ogg": {"reva": 155180, "revb": 155280, "type": "absolute", "better": "lower", "improve": 12393, "regress": 13715, "sha1": "a27bbec2"},
  "linux-release/media_tests_av_perf/ttp/Wifi_dartmoor2.wav": {"reva": 155180, "revb": 155280, "type": "absolute", "better": "lower", "improve": 6893, "regress": 7758, "sha1": "7a3ab979"},
  "linux-release/media_tests_av_perf/ttp/Wifi_roller.webm": {"reva": 175328, "revb": 176157, "type": "absolute", "better": "lower", "improve": 867.35, "regress": 1041.075, "sha1": "d99ce51c"},
- "linux-release/sizes/chrome-bss/bss": {"reva": 241266, "revb": 241318, "type": "absolute", "better": "lower", "improve": 309916, "regress": 342607, "sha1": "fe5643e5"},
+ "linux-release/sizes/chrome-bss/bss": {"reva": 260243, "revb": 260270, "type": "absolute", "better": "lower", "improve": 324470, "regress": 358626, "sha1": "85f07232"},
  "linux-release/sizes/chrome-data/data": {"reva": 234134, "revb": 234142, "type": "absolute", "better": "lower", "improve": 1909598, "regress": 2363084, "sha1": "c3b393d2"},
  "linux-release/sizes/chrome-si/initializers": {"reva": 251221, "revb": 251221, "type": "absolute", "better": "lower", "improve": 19, "regress": 19, "tolerance": 0, "sha1": "6800698b"},
  "linux-release/sizes/chrome-text/text": {"reva": 255987, "revb": 256040, "type": "absolute", "better": "lower", "improve": 89942595, "regress": 99411724, "sha1": "a3f12622"},