Default the PacHttpsUrlStrippingEnabled policy to False for Chrome OS enterprise users.

chrome/browser/policy/cloud/cloud_policy_browsertest.cc

Index: chrome/browser/policy/cloud/cloud_policy_browsertest.cc
diff --git a/chrome/browser/policy/cloud/cloud_policy_browsertest.cc b/chrome/browser/policy/cloud/cloud_policy_browsertest.cc
index 0566081e99b790b596f84a4cbea88c5dc05ccd97..047c919dbdde816035ca34c258d15fad8c6276d8 100644
--- a/chrome/browser/policy/cloud/cloud_policy_browsertest.cc
+++ b/chrome/browser/policy/cloud/cloud_policy_browsertest.cc
@@ -167,6 +167,9 @@ void GetExpectedDefaultPolicy(PolicyMap* policy_map) {
   policy_map->Set(key::kArcEnabled, POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER,
                   POLICY_SOURCE_ENTERPRISE_DEFAULT,
                   base::WrapUnique(new base::FundamentalValue(false)), nullptr);
+  policy_map->Set(key::kPacHttpsUrlStrippingEnabled, POLICY_LEVEL_MANDATORY,
+                  POLICY_SCOPE_USER, POLICY_SOURCE_ENTERPRISE_DEFAULT,
+                  base::WrapUnique(new base::FundamentalValue(false)), nullptr);
 #endif
 }
 
@@ -206,6 +209,9 @@ void GetExpectedTestPolicy(PolicyMap* expected, const char* homepage) {
   expected->Set(key::kArcEnabled, POLICY_LEVEL_MANDATORY, POLICY_SCOPE_USER,
                 POLICY_SOURCE_ENTERPRISE_DEFAULT,
                 base::WrapUnique(new base::FundamentalValue(false)), nullptr);
+  expected->Set(key::kPacHttpsUrlStrippingEnabled, POLICY_LEVEL_MANDATORY,
+                POLICY_SCOPE_USER, POLICY_SOURCE_ENTERPRISE_DEFAULT,
+                base::WrapUnique(new base::FundamentalValue(false)), nullptr);
 #endif
 }