Fix macOS CI: run network service in-process to avoid Mach port rendezvous failures

Mirror the Linux CI fix (NetworkServiceInProcess / StorageServiceOutOfProcess)
on macOS: the network utility subprocess cannot look up MachPortRendezvousServer
on CI runners, causing an infinite crash-restart loop. Running it inside the
browser process eliminates the subprocess spawn and the rendezvous lookup.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: linesight

unittests/main_test.py

@@ -188,6 +188,10 @@ def test_main(self):
             # Prevent macOS keychain authorization prompts during init
             # (matches CEF's own test infrastructure on macOS).
             switches["use-mock-keychain"] = ""
+            # Run network service in-process to avoid Mach port rendezvous
+            # failures for utility subprocesses on macOS CI runners.
+            switches["disable-features"] = "StorageServiceOutOfProcess"
+            switches["enable-features"] = "NetworkServiceInProcess"
         cef.Initialize(settings, switches=switches)
         subtest_message("cef.Initialize() ok")
 

unittests/osr_test.py

@@ -146,6 +146,10 @@ def test_osr(self):
             # Prevent macOS keychain authorization prompts during init
             # (matches CEF's own test infrastructure on macOS).
             switches["use-mock-keychain"] = ""
+            # Run network service in-process to avoid Mach port rendezvous
+            # failures for utility subprocesses on macOS CI runners.
+            switches["disable-features"] = "StorageServiceOutOfProcess"
+            switches["enable-features"] = "NetworkServiceInProcess"
         browser_settings = {
             # Tweaking OSR performance (Issue #240)
             "windowless_frame_rate": 30,  # Default frame rate in CEF is 30