Update size expectation for setup.exe after size improvement

tools/perf_expectations/perf_expectations.json

Index: tools/perf_expectations/perf_expectations.json
diff --git a/tools/perf_expectations/perf_expectations.json b/tools/perf_expectations/perf_expectations.json
index 69dc0cdd477ee72942eb22b20e67c641265e000f..6f6fd91d29413c5ba5ca12752b8f61d97c6be027 100644
--- a/tools/perf_expectations/perf_expectations.json
+++ b/tools/perf_expectations/perf_expectations.json
@@ -739,6 +739,6 @@
  "xp-release/sizes/chrome.exe/chrome.exe": {"reva": 309071, "revb": 309081, "type": "absolute", "better": "lower", "improve": 612377, "regress": 676839, "sha1": "63dbfdc5"},
  "xp-release/sizes/chrome_child.dll/chrome_child.dll": {"reva": 314576, "revb": 314588, "type": "absolute", "better": "lower", "improve": 39555993, "regress": 43720858, "sha1": "46896665"},
  "xp-release/sizes/mini_installer.exe/mini_installer.exe": {"reva": 296771, "revb": 296791, "type": "absolute", "better": "lower", "improve": 32967219, "regress": 36469709, "sha1": "f4744be2"},
- "xp-release/sizes/setup.exe/setup.exe": {"reva": 309071, "revb": 309081, "type": "absolute", "better": "lower", "improve": 933888, "regress": 1032192, "sha1": "a257fcad"},
+ "xp-release/sizes/setup.exe/setup.exe": {"reva": 314972, "revb": 314998, "type": "absolute", "better": "lower", "improve": 882816, "regress": 975744, "sha1": "682290df"},
  "load": true
 }