Re-add utility service in-process flags for Linux CI

With --in-process-gpu and --single-process, the GPU and renderer no
longer spawn subprocesses. However StorageServiceOutOfProcess and the
network service utility processes still spawn and fail the global
descriptor lookup (key 7) because CEF 146 does not pass the Mojo
bootstrap fd to subprocesses in --no-sandbox mode, causing
CreateBrowserSync() to block ~60s and return None.

Add --disable-features=StorageServiceOutOfProcess so the storage
service runs in the browser process, and --enable-features=
NetworkServiceInProcess so the network service does the same.

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

Author: linesight

unittests/main_test.py

@@ -162,6 +162,11 @@ def test_main(self):
             # CreateBrowserSync() returns None.
             switches["single-process"] = ""
             switches["no-zygote"] = ""
+            # Run utility services in-process so they don't need the Mojo
+            # bootstrap fd (global descriptor 7) that CEF 146 does not pass
+            # to subprocesses in --no-sandbox mode on Linux CI.
+            switches["disable-features"] = "StorageServiceOutOfProcess"
+            switches["enable-features"] = "NetworkServiceInProcess"
         cef.Initialize(settings, switches=switches)
         subtest_message("cef.Initialize() ok")
 

unittests/osr_test.py

@@ -128,6 +128,11 @@ def test_osr(self):
             # CreateBrowserSync() returns None.
             switches["single-process"] = ""
             switches["no-zygote"] = ""
+            # Run utility services in-process so they don't need the Mojo
+            # bootstrap fd (global descriptor 7) that CEF 146 does not pass
+            # to subprocesses in --no-sandbox mode on Linux CI.
+            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