Prevent networkingPrivate.forgetNetwork from removing shared configs

chrome/browser/extensions/api/networking_private/networking_private_chromeos_apitest.cc

Index: chrome/browser/extensions/api/networking_private/networking_private_chromeos_apitest.cc
diff --git a/chrome/browser/extensions/api/networking_private/networking_private_chromeos_apitest.cc b/chrome/browser/extensions/api/networking_private/networking_private_chromeos_apitest.cc
index a00b389e3b152f837e6df948d321fec4f03366fb..936dde907d0ac896af22f5fd55c39836704731a2 100644
--- a/chrome/browser/extensions/api/networking_private/networking_private_chromeos_apitest.cc
+++ b/chrome/browser/extensions/api/networking_private/networking_private_chromeos_apitest.cc
@@ -634,6 +634,37 @@ IN_PROC_BROWSER_TEST_F(NetworkingPrivateChromeOSApiTest, ForgetNetwork) {
   EXPECT_TRUE(RunNetworkingSubtest("forgetNetwork")) << message_;
 }
 
+IN_PROC_BROWSER_TEST_F(NetworkingPrivateChromeOSApiTest,
+                       ForgetPolicyControlledNetwork) {
+  const std::string user_policy_blob =
+      R"({
+           "NetworkConfigurations": [{
+             "GUID": "stub_wifi2",
+             "Type": "WiFi",
+             "Name": "My WiFi Network",
+             "WiFi": {
+               "HexSSID": "77696669325F50534B",
+               "Passphrase": "passphrase",
+               "Recommended": [ "AutoConnect", "Passphrase" ],
+               "Security": "WPA-PSK"
+             }
+           }],
+           "Certificates": [],
+           "Type": "UnencryptedConfiguration"
+         })";
+
+  policy::PolicyMap policy;
+  policy.Set(policy::key::kOpenNetworkConfiguration,
+             policy::POLICY_LEVEL_MANDATORY, policy::POLICY_SCOPE_USER,
+             policy::POLICY_SOURCE_CLOUD,
+             base::WrapUnique(new base::Value(user_policy_blob)), nullptr);
+  provider_.UpdateChromePolicy(policy);
+
+  content::RunAllPendingInMessageLoop();
+
+  EXPECT_TRUE(RunNetworkingSubtest("forgetPolicyControlledNetwork"));
+}
+
 // TODO(stevenjb): Find a better way to set this up on Chrome OS.
 IN_PROC_BROWSER_TEST_F(NetworkingPrivateChromeOSApiTest, GetManagedProperties) {
   const std::string uidata_blob =