Updating mac-release/sizes/Chromium.app/Chromium.app

BUG=422450
TBR=govind@chromium.org

Review URL: https://codereview.chromium.org/641183007

Cr-Commit-Position: refs/heads/master@{#299167}

tools/perf_expectations/perf_expectations.json

@@ -381,7 +381,7 @@
  "linux-release/sizes/nacl_helper_bootstrap-text/text": {"reva": 256743, "revb": 256743, "type": "absolute", "better": "lower", "improve": 4882, "regress": 5396, "sha1": "ffc106e5"},
  "linux-release/sizes/nacl_helper_bootstrap/nacl_helper_bootstrap": {"reva": 114822, "revb": 115019, "type": "absolute", "better": "lower", "improve": 8776, "regress": 9700, "sha1": "3f284fed"},
  "linux-release/sizes/totals-textrel/textrel": {"reva": 205083, "revb": 206071, "type": "absolute", "better": "lower", "improve": 1075, "regress": 1189, "sha1": "69d07fda"},
- "mac-release/sizes/Chromium.app/Chromium.app": {"reva": 271545, "revb": 271559, "type": "absolute", "better": "lower", "improve": 129966080, "regress": 143646720, "sha1": "ab596e70"},
+ "mac-release/sizes/Chromium.app/Chromium.app": {"reva": 298901, "revb": 299000, "type": "absolute", "better": "lower", "improve": 136390451, "regress": 150983885, "sha1": "9858fcf5"},
  "mac-release/sizes/Chromium/Chromium": {"reva": 165473, "revb": 165473, "type": "absolute", "better": "lower", "improve": 8132, "regress": 8988, "sha1": "8e448691"},
  "mac-release/sizes/ChromiumFramework/ChromiumFramework": {"reva": 280730, "revb": 280780, "type": "absolute", "better": "lower", "improve": 76114300, "regress": 84126366, "sha1": "e48521cd"},
  "mac-release/sizes/chrome-si/initializers": {"reva": 281731, "revb": 281731, "type": "absolute", "better": "lower", "improve": 0, "regress": 0, "tolerance": 0, "sha1": "01759b7f"},